Here are 50 multiple-choice questions (MCQs) related to the topic Inductance for the PSSSB JE (Junior Engineer) Electrical exam, along with answers and analysis for each question.(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
1. What is the unit of inductance?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Ohm
b) Ampere
c) Henry
d) Volt
Answer: c) Henry
Analysis: The unit of inductance is the Henry (H), named after Joseph Henry, who discovered the phenomenon of self-inductance.
2. Inductance is the property of a coil to oppose any change in:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Voltage
b) Current
c) Power
d) Frequency
Answer: b) Current
Analysis: Inductance opposes changes in current by storing energy in a magnetic field.
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3. The inductance of a coil depends on:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Number of turns
b) Length of the coil
c) Cross-sectional area of the coil
d) All of the above
Answer: d) All of the above
Analysis: Inductance depends on the number of turns, the length of the coil, and the cross-sectional area.
4. What happens to the inductance of a coil if the number of turns is doubled?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) It is halved
b) It is doubled
c) It is quadrupled
d) It remains unchanged
Answer: b) It is doubled
Analysis: The inductance of a coil is directly proportional to the square of the number of turns.
5. The energy stored in an inductor is given by:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 12LI2\frac{1}{2} L I^2
b) LI2L I^2
c) 12LV2\frac{1}{2} L V^2
d) 12VI2\frac{1}{2} V I^2
Answer: a) 12LI2\frac{1}{2} L I^2
Analysis: The energy stored in an inductor is proportional to the inductance and the square of the current.
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6. What is the relationship between inductance (L) and magnetic flux (Φ) in a coil?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) L=ΦIL = \frac{Φ}{I}
b) L=I×ΦL = I \times Φ
c) L=I/ΦL = I / Φ
d) L=ΦVL = \frac{Φ}{V}
Answer: a) L=ΦIL = \frac{Φ}{I}
Analysis: Inductance is defined as the ratio of magnetic flux to the current flowing through a coil.
7. Inductance is related to the rate of change of which of the following quantities?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Voltage
b) Current
c) Resistance
d) Impedance
Answer: a) Voltage
Analysis: Inductance opposes changes in current, and the induced voltage in an inductor is proportional to the rate of change of current.
8. The total inductance of inductors connected in series is:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) The sum of individual inductances
b) The reciprocal of the sum of the reciprocals
c) The average of the inductances
d) None of the above
Answer: a) The sum of individual inductances
Analysis: In series, inductances add directly: Ltotal=L1+L2+⋯+LnL_{total} = L_1 + L_2 + \cdots + L_n.
9. The total inductance of inductors connected in parallel is:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) The sum of individual inductances
b) The reciprocal of the sum of the reciprocals
c) The average of the inductances
d) None of the above
Answer: b) The reciprocal of the sum of the reciprocals
Analysis: For parallel inductors:
1Ltotal=1L1+1L2+⋯+1Ln\frac{1}{L_{total}} = \frac{1}{L_1} + \frac{1}{L_2} + \cdots + \frac{1}{L_n}.
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10. The time constant of an RL circuit is:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) LR\frac{L}{R}
b) RL\frac{R}{L}
c) L×RL \times R
d) R+LR + L
Answer: a) LR\frac{L}{R}
Analysis: The time constant τ\tau of an RL circuit is LR\frac{L}{R}, which defines how quickly the current in the circuit changes.
11. What is the effect of increasing the frequency on the inductive reactance?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) It decreases
b) It increases
c) It remains constant
d) It becomes zero
Answer: b) It increases
Analysis: Inductive reactance XL=2πfLX_L = 2 \pi f L, which increases with frequency.
12. If the inductance of a coil is 10 H and the current increases at a rate of 5 A/s, what is the induced voltage?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 50 V
b) 5 V
c) 10 V
d) 2 V
Answer: a) 50 V
Analysis: The induced voltage is given by V=LdIdtV = L \frac{dI}{dt}, so V=10×5=50V = 10 \times 5 = 50 V.
13. Which of the following materials is used to increase the inductance of a coil?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Copper
b) Iron
c) Aluminum
d) Silver
Answer: b) Iron
Analysis: Iron has a high permeability and is used as a core material to increase the inductance of coils.
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14. What is the primary cause of inductance in a coil?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Magnetic field
b) Electric field
c) Resistance of the wire
d) Voltage across the coil
Answer: a) Magnetic field
Analysis: Inductance arises due to the magnetic field created by the current flowing through the coil.
15. Inductors are used in electrical circuits primarily to:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Store energy in the form of electric fields
b) Oppose changes in voltage
c) Oppose changes in current
d) Increase the current
Answer: c) Oppose changes in current
Analysis: Inductors oppose changes in current by storing energy in their magnetic fields.
16. What will happen to the inductive reactance if the frequency is halved?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) It is halved
b) It is doubled
c) It remains unchanged
d) It becomes zero
Answer: a) It is halved
Analysis: Since XL=2πfLX_L = 2 \pi f L, halving the frequency will halve the inductive reactance.
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17. An inductor with inductance LL is connected to a DC voltage. After a long time, the inductor behaves like:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) A short circuit
b) An open circuit
c) A resistor
d) A capacitor
Answer: b) An open circuit
Analysis: In DC steady-state conditions, the inductor behaves like an open circuit as the current through it becomes constant.
18. The self-inductance of a coil depends on:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) The current flowing through it
b) The voltage across it
c) The material of the core
d) The temperature
Answer: c) The material of the core
Analysis: The self-inductance depends on the coil’s geometry and the magnetic permeability of the core material.
19. In an RL circuit, the voltage across the inductor is maximum when:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Current is maximum
b) Current is zero
c) Voltage is zero
d) Voltage is constant
Answer: b) Current is zero
Analysis: The maximum voltage occurs when the current is changing most rapidly, which happens when the current is zero.
20. In a series R-L circuit, the impedance ZZ is given by:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Z=R+LZ = R + L
b) Z=R2+L2Z = \sqrt{R^2 + L^2}
c) Z=RLZ = \frac{R}{L}
d) Z=R×LZ = R \times L
Answer: b) Z=R2+L2Z = \sqrt{R^2 + L^2}
Analysis: The impedance of a series R-L circuit is the square root of the sum of the squares of the resistance and inductive reactance.
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21. What is the inductance of a coil if the magnetic flux is 0.5 Wb and the current is 2 A?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 0.25 H
b) 0.5 H
c) 1 H
d) 2 H
Answer: a) 0.25 H
Analysis: Inductance L=ΦIL = \frac{\Phi}{I}, so L=0.52=0.25L = \frac{0.5}{2} = 0.25 H.
22. Inductive reactance is maximum when:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Current is zero
b) Voltage is zero
c) Frequency is zero
d) Frequency is maximum
Answer: d) Frequency is maximum
Analysis: Inductive reactance increases with frequency, and it reaches its maximum value at the highest frequency.
23. What will happen to the current in an RL circuit when the supply voltage is suddenly removed?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) It will immediately drop to zero
b) It will decrease exponentially
c) It will increase exponentially
d) It will remain constant
Answer: b) It will decrease exponentially
Analysis: In an RL circuit, when the voltage is suddenly removed, the current decreases exponentially due to the energy stored in the inductor.
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24. What is the primary use of inductors in power supplies?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Filtering
b) Boosting voltage
c) Reducing power losses
d) Regulating current
Answer: a) Filtering
Analysis: Inductors are commonly used in power supplies for filtering, as they oppose changes in current.
25. The inductive reactance of a coil is 50 ohms. If the frequency is doubled, what will be the new inductive reactance?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 50 ohms
b) 100 ohms
c) 200 ohms
d) 25 ohms
Answer: b) 100 ohms
Analysis: Since XL=2πfLX_L = 2 \pi f L, doubling the frequency will double the inductive reactance.
26. The mutual inductance between two coils is defined as the ratio of:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Voltage to current
b) Change in magnetic flux to change in current
c) Voltage in one coil to the current in the other coil
d) Magnetic flux to current
Answer: c) Voltage in one coil to the current in the other coil
Analysis: Mutual inductance measures the ability of one coil to induce a voltage in another coil when the current in the first coil changes.
27. In a transformer, inductance is used for:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Voltage conversion
b) Current regulation
c) Signal modulation
d) Energy storage
Answer: a) Voltage conversion
Analysis: In transformers, inductance is used to step up or step down voltage levels based on the turns ratio.
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28. Which type of core material is generally used to increase the inductance in transformers?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Air
b) Copper
c) Silicon steel
d) Aluminum
Answer: c) Silicon steel
Analysis: Silicon steel is used in transformer cores because it has high magnetic permeability, which increases inductance.
29. Which of the following is true for a long solenoid in terms of inductance?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) Inductance is independent of the number of turns
b) Inductance increases with the length of the solenoid
c) Inductance is directly proportional to the square of the number of turns
d) Inductance is independent of the core material
Answer: c) Inductance is directly proportional to the square of the number of turns
Analysis: The inductance of a solenoid increases with the square of the number of turns, as well as with the permeability of the core material.
30. The inductance of a coil with 100 turns, length of 10 cm, and cross-sectional area of 1 cm² is 10 mH. What will be the inductance if the number of turns is doubled?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 10 mH
b) 20 mH
c) 40 mH
d) 80 mH
Answer: b) 20 mH
Analysis: Doubling the number of turns will quadruple the inductance.
ਇੱਥੇ PSSSB JE (ਜੂਨੀਅਰ ਇੰਜੀਨੀਅਰ) ਇਲੈਕਟ੍ਰੀਕਲ ਇਮਤਿਹਾਨ ਲਈ ਇੰਡਕਟੈਂਸ ਵਿਸ਼ੇ ਨਾਲ ਸਬੰਧਤ 50 ਬਹੁ-ਚੋਣ ਵਾਲੇ ਸਵਾਲ (MCQs) ਹਨ, ਹਰ ਸਵਾਲ ਦੇ ਜਵਾਬ ਅਤੇ ਵਿਸ਼ਲੇਸ਼ਣ ਦੇ ਨਾਲ।
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1. ਇੰਡਕਟੈਂਸ ਦੀ ਇਕਾਈ ਕੀ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਓਹਮ
b) ਐਂਪੀਅਰ
c) ਹੈਨਰੀ
d) ਵੋਲਟ
ਉੱਤਰ: c) ਹੈਨਰੀ
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੰਡਕਟੈਂਸ ਦੀ ਇਕਾਈ ਹੈਨਰੀ (ਐਚ), ਜੋਸਫ਼ ਹੈਨਰੀ ਦੇ ਨਾਮ 'ਤੇ ਹੈ, ਜਿਸ ਨੇ ਸਵੈ-ਇੰਡਕਟੈਂਸ ਦੀ ਘਟਨਾ ਦੀ ਖੋਜ ਕੀਤੀ ਸੀ।
2. ਇੰਡਕਟੈਂਸ ਕਿਸੇ ਵੀ ਤਬਦੀਲੀ ਦਾ ਵਿਰੋਧ ਕਰਨ ਲਈ ਕੋਇਲ ਦੀ ਵਿਸ਼ੇਸ਼ਤਾ ਹੈ:(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਵੋਲਟੇਜ
b) ਵਰਤਮਾਨ
c) ਪਾਵਰ
d) ਬਾਰੰਬਾਰਤਾ
ਉੱਤਰ: ਅ) ਵਰਤਮਾਨ
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੰਡਕਟੈਂਸ ਇੱਕ ਚੁੰਬਕੀ ਖੇਤਰ ਵਿੱਚ ਊਰਜਾ ਨੂੰ ਸਟੋਰ ਕਰਕੇ ਕਰੰਟ ਵਿੱਚ ਤਬਦੀਲੀਆਂ ਦਾ ਵਿਰੋਧ ਕਰਦਾ ਹੈ।
3. ਇੱਕ ਕੋਇਲ ਦੀ ਪ੍ਰੇਰਣਾ ਇਸ 'ਤੇ ਨਿਰਭਰ ਕਰਦੀ ਹੈ:(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਮੋੜਾਂ ਦੀ ਗਿਣਤੀ
b) ਕੋਇਲ ਦੀ ਲੰਬਾਈ
c) ਕੋਇਲ ਦਾ ਅੰਤਰ-ਵਿਭਾਗੀ ਖੇਤਰ
d) ਉਪਰੋਕਤ ਸਾਰੇ
ਉੱਤਰ: d) ਉਪਰੋਕਤ ਸਾਰੇ
ਵਿਸ਼ਲੇਸ਼ਣ: ਇਨਡਕਟੈਂਸ ਮੋੜਾਂ ਦੀ ਗਿਣਤੀ, ਕੋਇਲ ਦੀ ਲੰਬਾਈ, ਅਤੇ ਅੰਤਰ-ਵਿਭਾਗੀ ਖੇਤਰ 'ਤੇ ਨਿਰਭਰ ਕਰਦਾ ਹੈ।
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4. ਜੇਕਰ ਮੋੜਾਂ ਦੀ ਸੰਖਿਆ ਦੁੱਗਣੀ ਕੀਤੀ ਜਾਂਦੀ ਹੈ ਤਾਂ ਇੱਕ ਕੋਇਲ ਦੇ ਇੰਡਕਟੈਂਸ ਦਾ ਕੀ ਹੁੰਦਾ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਇਹ ਅੱਧਾ ਰਹਿ ਗਿਆ ਹੈ
b) ਇਹ ਦੁੱਗਣਾ ਹੈ
c) ਇਹ ਚੌਗੁਣਾ ਹੈ
d) ਇਹ ਬਦਲਿਆ ਨਹੀਂ ਰਹਿੰਦਾ
ਉੱਤਰ: ਅ) ਇਹ ਦੁੱਗਣਾ ਹੈ
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੱਕ ਕੋਇਲ ਦਾ ਪ੍ਰਵੇਸ਼ ਮੋੜਾਂ ਦੀ ਸੰਖਿਆ ਦੇ ਵਰਗ ਦੇ ਸਿੱਧੇ ਅਨੁਪਾਤੀ ਹੁੰਦਾ ਹੈ।
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
5. ਇੱਕ ਇੰਡਕਟਰ ਵਿੱਚ ਸਟੋਰ ਕੀਤੀ ਊਰਜਾ ਇਹਨਾਂ ਦੁਆਰਾ ਦਿੱਤੀ ਜਾਂਦੀ ਹੈ:(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 12LI2\frac{1}{2} L I^2
b) LI2L I^2
c) 12LV2\frac{1}{2} L V^2
d) 12VI2\frac{1}{2} V I^2
ਉੱਤਰ: a) 12LI2\frac{1}{2} L I^2
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੱਕ ਇੰਡਕਟਰ ਵਿੱਚ ਸਟੋਰ ਕੀਤੀ ਊਰਜਾ ਇੰਡਕਟੈਂਸ ਅਤੇ ਕਰੰਟ ਦੇ ਵਰਗ ਦੇ ਅਨੁਪਾਤੀ ਹੁੰਦੀ ਹੈ।
6. ਇੱਕ ਕੋਇਲ ਵਿੱਚ ਇੰਡਕਟੈਂਸ (L) ਅਤੇ ਚੁੰਬਕੀ ਪ੍ਰਵਾਹ (Φ) ਵਿਚਕਾਰ ਕੀ ਸਬੰਧ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) L=ΦIL = \frac{Φ}{I}
b) L=I×ΦL = I \times Φ
c) L=I/ΦL = I / Φ
d) L=ΦVL = \frac{Φ}{V}
ਉੱਤਰ: a) L=ΦIL = frac{Φ}{I}
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੰਡਕਟੈਂਸ ਨੂੰ ਇੱਕ ਕੋਇਲ ਦੁਆਰਾ ਵਹਿ ਰਹੇ ਕਰੰਟ ਨਾਲ ਚੁੰਬਕੀ ਪ੍ਰਵਾਹ ਦੇ ਅਨੁਪਾਤ ਵਜੋਂ ਪਰਿਭਾਸ਼ਿਤ ਕੀਤਾ ਜਾਂਦਾ ਹੈ।
7. ਇੰਡਕਟੈਂਸ ਹੇਠ ਲਿਖੀਆਂ ਵਿੱਚੋਂ ਕਿਹੜੀ ਮਾਤਰਾ ਦੇ ਬਦਲਾਅ ਦੀ ਦਰ ਨਾਲ ਸਬੰਧਤ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
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a) ਵੋਲਟੇਜ
b) ਵਰਤਮਾਨ
c) ਵਿਰੋਧ
d) ਰੁਕਾਵਟ
ਉੱਤਰ: a) ਵੋਲਟੇਜ
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੰਡਕਟੈਂਸ ਕਰੰਟ ਵਿੱਚ ਤਬਦੀਲੀਆਂ ਦਾ ਵਿਰੋਧ ਕਰਦਾ ਹੈ, ਅਤੇ ਇੱਕ ਇੰਡਕਟਰ ਵਿੱਚ ਪ੍ਰੇਰਿਤ ਵੋਲਟੇਜ ਕਰੰਟ ਦੀ ਤਬਦੀਲੀ ਦੀ ਦਰ ਦੇ ਅਨੁਪਾਤੀ ਹੈ।
8. ਲੜੀ ਵਿੱਚ ਜੁੜੇ ਇੰਡਕਟਰਾਂ ਦੀ ਕੁੱਲ ਇੰਡਕਟੈਂਸ ਹੈ:(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਵਿਅਕਤੀਗਤ ਇੰਡਕਟੈਂਸ ਦਾ ਜੋੜ
b) ਪਰਸਪਰ ਦੇ ਜੋੜ ਦਾ ਪਰਸਪਰ
c) ਇੰਡਕਟੈਂਸ ਦੀ ਔਸਤ
d) ਉਪਰੋਕਤ ਵਿੱਚੋਂ ਕੋਈ ਨਹੀਂ
ਉੱਤਰ: a) ਵਿਅਕਤੀਗਤ ਇੰਡਕਟੈਂਸ ਦਾ ਜੋੜ
ਵਿਸ਼ਲੇਸ਼ਣ: ਲੜੀ ਵਿੱਚ, ਇੰਡਕਟੈਂਸ ਸਿੱਧੇ ਜੋੜਦੇ ਹਨ: Ltotal=L1+L2+⋯+LnL_{total} = L_1 + L_2 + \cdots + L_n।
9. ਸਮਾਨਾਂਤਰ ਵਿੱਚ ਜੁੜੇ ਇੰਡਕਟਰਾਂ ਦੀ ਕੁੱਲ ਇੰਡਕਟੈਂਸ ਹੈ:(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਵਿਅਕਤੀਗਤ ਇੰਡਕਟੈਂਸ ਦਾ ਜੋੜ
b) ਪਰਸਪਰ ਦੇ ਜੋੜ ਦਾ ਪਰਸਪਰ
c) ਇੰਡਕਟੈਂਸ ਦੀ ਔਸਤ
d) ਉਪਰੋਕਤ ਵਿੱਚੋਂ ਕੋਈ ਨਹੀਂ
ਉੱਤਰ: ਅ) ਪਰਸਪਰ ਦੇ ਜੋੜ ਦਾ ਪਰਸਪਰ
ਵਿਸ਼ਲੇਸ਼ਣ: ਪੈਰਲਲ ਇੰਡਕਟਰਾਂ ਲਈ:
1Ltotal=1L1+1L2+⋯+1Ln\frac{1}{L_{total}} = \frac{1}{L_1} + \frac{1}{L_2} + \cdots + \frac{1}{L_n}।
BOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
10. ਇੱਕ RL ਸਰਕਟ ਦਾ ਸਮਾਂ ਸਥਿਰ ਹੈ:(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) LR\frac{L}{R}
b) RL\frac{R}{L}
c) L×RL \ ਵਾਰ R
d) R+LR + L
ਉੱਤਰ: a) LR\frac{L}{R}
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੱਕ RL ਸਰਕਟ ਦਾ ਸਮਾਂ ਸਥਿਰ τ\tau LR\frac{L}{R} ਹੈ, ਜੋ ਪਰਿਭਾਸ਼ਿਤ ਕਰਦਾ ਹੈ ਕਿ ਸਰਕਟ ਵਿੱਚ ਕਰੰਟ ਕਿੰਨੀ ਤੇਜ਼ੀ ਨਾਲ ਬਦਲਦਾ ਹੈ।
11. ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ 'ਤੇ ਬਾਰੰਬਾਰਤਾ ਵਧਾਉਣ ਦਾ ਕੀ ਪ੍ਰਭਾਵ ਹੁੰਦਾ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਇਹ ਘਟਦਾ ਹੈ
b) ਇਹ ਵਧਦਾ ਹੈ
c) ਇਹ ਸਥਿਰ ਰਹਿੰਦਾ ਹੈ
d) ਇਹ ਜ਼ੀਰੋ ਬਣ ਜਾਂਦਾ ਹੈ
ਉੱਤਰ: ਅ) ਇਹ ਵਧਦਾ ਹੈ
ਵਿਸ਼ਲੇਸ਼ਣ: ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ XL=2πfLX_L = 2 \pi f L, ਜੋ ਬਾਰੰਬਾਰਤਾ ਨਾਲ ਵਧਦਾ ਹੈ।
12. ਜੇਕਰ ਕਿਸੇ ਕੋਇਲ ਦਾ ਇੰਡਕਟੈਂਸ 10 H ਹੈ ਅਤੇ ਕਰੰਟ 5 A/s ਦੀ ਦਰ ਨਾਲ ਵਧਦਾ ਹੈ, ਤਾਂ ਪ੍ਰੇਰਿਤ ਵੋਲਟੇਜ ਕੀ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 50 ਵੀ
b) 5 ਵੀ
c) 10 ਵੀ
d) 2 ਵੀ
ਉੱਤਰ: a) 50 ਵੀBOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
ਵਿਸ਼ਲੇਸ਼ਣ: ਪ੍ਰੇਰਿਤ ਵੋਲਟੇਜ V=LdIdtV = L \frac{dI}{dt} ਦੁਆਰਾ ਦਿੱਤਾ ਜਾਂਦਾ ਹੈ, ਇਸਲਈ V=10×5=50V = 10 \times 5 =
50 V।
13. ਕੋਇਲ ਦੇ ਪ੍ਰੇਰਕਤਾ ਨੂੰ ਵਧਾਉਣ ਲਈ ਹੇਠ ਲਿਖੀਆਂ ਵਿੱਚੋਂ ਕਿਹੜੀ ਸਮੱਗਰੀ ਵਰਤੀ ਜਾਂਦੀ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਤਾਂਬਾ
b) ਆਇਰਨ
c) ਅਲਮੀਨੀਅਮ
d) ਚਾਂਦੀ
ਉੱਤਰ: ਅ) ਲੋਹਾ
ਵਿਸ਼ਲੇਸ਼ਣ: ਆਇਰਨ ਦੀ ਬਹੁਤ ਜ਼ਿਆਦਾ ਪਾਰਦਰਸ਼ੀਤਾ ਹੁੰਦੀ ਹੈ ਅਤੇ ਕੋਇਲਾਂ ਦੀ ਪ੍ਰੇਰਣਾ ਨੂੰ ਵਧਾਉਣ ਲਈ ਇੱਕ ਮੁੱਖ ਸਮੱਗਰੀ ਵਜੋਂ ਵਰਤਿਆ ਜਾਂਦਾ ਹੈ।
14. ਇੱਕ ਕੋਇਲ ਵਿੱਚ ਇੰਡਕਟੈਂਸ ਦਾ ਮੁੱਖ ਕਾਰਨ ਕੀ ਹੈ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਚੁੰਬਕੀ ਖੇਤਰ
b) ਇਲੈਕਟ੍ਰਿਕ ਖੇਤਰ
c) ਤਾਰ ਦਾ ਵਿਰੋਧ
d) ਕੋਇਲ ਦੇ ਪਾਰ ਵੋਲਟੇਜ
ਉੱਤਰ: a) ਚੁੰਬਕੀ ਖੇਤਰ
ਵਿਸ਼ਲੇਸ਼ਣ: ਕੋਇਲ ਦੁਆਰਾ ਵਹਿ ਰਹੇ ਕਰੰਟ ਦੁਆਰਾ ਬਣਾਏ ਚੁੰਬਕੀ ਖੇਤਰ ਦੇ ਕਾਰਨ ਇੰਡਕਟੈਂਸ ਪੈਦਾ ਹੁੰਦਾ ਹੈ।
15. ਇਲੈਕਟ੍ਰੀਕਲ ਸਰਕਟਾਂ ਵਿੱਚ ਇੰਡਕਟਰਾਂ ਦੀ ਵਰਤੋਂ ਮੁੱਖ ਤੌਰ 'ਤੇ:(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਬਿਜਲੀ ਦੇ ਖੇਤਰਾਂ ਦੇ ਰੂਪ ਵਿੱਚ ਊਰਜਾ ਸਟੋਰ ਕਰੋ
b) ਵੋਲਟੇਜ ਵਿੱਚ ਤਬਦੀਲੀਆਂ ਦਾ ਵਿਰੋਧ ਕਰੋ
c) ਵਰਤਮਾਨ ਵਿੱਚ ਤਬਦੀਲੀਆਂ ਦਾ ਵਿਰੋਧ ਕਰੋ
d) ਵਰਤਮਾਨ ਨੂੰ ਵਧਾਓ
ਉੱਤਰ: c) ਵਰਤਮਾਨ ਵਿੱਚ ਤਬਦੀਲੀਆਂ ਦਾ ਵਿਰੋਧ ਕਰੋ
BOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੰਡਕਟਰ ਆਪਣੇ ਚੁੰਬਕੀ ਖੇਤਰਾਂ ਵਿੱਚ ਊਰਜਾ ਸਟੋਰ ਕਰਕੇ ਕਰੰਟ ਵਿੱਚ ਤਬਦੀਲੀਆਂ ਦਾ ਵਿਰੋਧ ਕਰਦੇ ਹਨ।
16. ਜੇਕਰ ਬਾਰੰਬਾਰਤਾ ਅੱਧੀ ਹੋ ਜਾਂਦੀ ਹੈ ਤਾਂ ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ ਦਾ ਕੀ ਹੋਵੇਗਾ?(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਇਹ ਅੱਧਾ ਰਹਿ ਗਿਆ ਹੈ
b) ਇਹ ਦੁੱਗਣਾ ਹੈ
c) ਇਹ ਬਦਲਿਆ ਨਹੀਂ ਰਹਿੰਦਾ
d) ਇਹ ਜ਼ੀਰੋ ਬਣ ਜਾਂਦਾ ਹੈ
ਉੱਤਰ: a) ਇਹ ਅੱਧਾ ਰਹਿ ਗਿਆ ਹੈ
ਵਿਸ਼ਲੇਸ਼ਣ: ਕਿਉਂਕਿ XL=2πfLX_L = 2 \pi f L, ਬਾਰੰਬਾਰਤਾ ਨੂੰ ਅੱਧਾ ਕਰਨ ਨਾਲ ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ ਅੱਧੀ ਹੋ ਜਾਵੇਗੀ।
17. ਇੰਡਕਟੈਂਸ LL ਵਾਲਾ ਇੱਕ ਇੰਡਕਟਰ ਇੱਕ DC ਵੋਲਟੇਜ ਨਾਲ ਜੁੜਿਆ ਹੁੰਦਾ ਹੈ। ਲੰਬੇ ਸਮੇਂ ਬਾਅਦ, ਪ੍ਰੇਰਕ ਇਸ ਤਰ੍ਹਾਂ ਵਿਵਹਾਰ ਕਰਦਾ ਹੈ:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਇੱਕ ਸ਼ਾਰਟ ਸਰਕਟ
b) ਇੱਕ ਓਪਨ ਸਰਕਟ
c) ਇੱਕ ਰੋਧਕ
d) ਇੱਕ ਕੈਪਸੀਟਰ
ਉੱਤਰ: ਅ) ਇੱਕ ਓਪਨ ਸਰਕਟ
ਵਿਸ਼ਲੇਸ਼ਣ: DC ਸਥਿਰ-ਸਥਿਤੀ ਸਥਿਤੀਆਂ ਵਿੱਚ, ਇੰਡਕਟਰ ਇੱਕ ਓਪਨ ਸਰਕਟ ਵਾਂਗ ਵਿਵਹਾਰ ਕਰਦਾ ਹੈ ਕਿਉਂਕਿ ਇਸਦੇ ਦੁਆਰਾ ਕਰੰਟ ਸਥਿਰ ਹੋ ਜਾਂਦਾ ਹੈ।
18. ਇੱਕ ਕੋਇਲ ਦਾ ਸਵੈ-ਇੰਡਕਟੈਂਸ ਇਸ 'ਤੇ ਨਿਰਭਰ ਕਰਦਾ ਹੈ:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਇਸ ਵਿੱਚੋਂ ਵਗਦਾ ਕਰੰਟ
b) ਇਸ ਦੇ ਪਾਰ ਵੋਲਟੇਜ
c) ਕੋਰ ਦੀ ਸਮੱਗਰੀ
d) ਤਾਪਮਾਨ
ਉੱਤਰ: c) ਕੋਰ ਦੀ ਸਮੱਗਰੀBOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
ਵਿਸ਼ਲੇਸ਼ਣ: ਸਵੈ-ਇੰਡਕਟੈਂਸ ਕੋਇਲ ਦੀ ਜਿਓਮੈਟਰੀ ਅਤੇ ਕੋਰ ਸਮੱਗਰੀ ਦੀ ਚੁੰਬਕੀ ਪਾਰਦਰਸ਼ੀਤਾ 'ਤੇ ਨਿਰਭਰ ਕਰਦਾ ਹੈ।
19. ਇੱਕ RL ਸਰਕਟ ਵਿੱਚ, ਇੰਡਕਟਰ ਵਿੱਚ ਵੋਲਟੇਜ ਅਧਿਕਤਮ ਹੁੰਦਾ ਹੈ ਜਦੋਂ:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਵਰਤਮਾਨ ਅਧਿਕਤਮ ਹੈ
b) ਵਰਤਮਾਨ ਜ਼ੀਰੋ ਹੈ
c) ਵੋਲਟੇਜ ਜ਼ੀਰੋ ਹੈ
d) ਵੋਲਟੇਜ ਸਥਿਰ ਹੈ
ਉੱਤਰ: ਅ) ਵਰਤਮਾਨ ਜ਼ੀਰੋ ਹੈ
ਵਿਸ਼ਲੇਸ਼ਣ: ਅਧਿਕਤਮ ਵੋਲਟੇਜ ਉਦੋਂ ਵਾਪਰਦਾ ਹੈ ਜਦੋਂ ਕਰੰਟ ਬਹੁਤ ਤੇਜ਼ੀ ਨਾਲ ਬਦਲ ਰਿਹਾ ਹੁੰਦਾ ਹੈ, ਜੋ ਉਦੋਂ ਹੁੰਦਾ ਹੈ ਜਦੋਂ ਕਰੰਟ ਜ਼ੀਰੋ ਹੁੰਦਾ ਹੈ।
20. ਇੱਕ ਲੜੀ R-L ਸਰਕਟ ਵਿੱਚ, ਪ੍ਰਤੀਰੋਧ ZZ ਦੁਆਰਾ ਦਿੱਤਾ ਗਿਆ ਹੈ
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series ):
a) Z=R+LZ = R + L
b) Z=R2+L2Z = \sqrt{R^2 + L^2}
c) Z=RLZ = \frac{R}{L}
d) Z=R×LZ = R \times L
ਉੱਤਰ: b) Z=R2+L2Z = \sqrt{R^2 + L^2}
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੱਕ ਲੜੀ R-L ਸਰਕਟ ਦੀ ਰੁਕਾਵਟ ਪ੍ਰਤੀਰੋਧ ਅਤੇ ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ ਦੇ ਵਰਗਾਂ ਦੇ ਜੋੜ ਦਾ ਵਰਗ ਮੂਲ ਹੈ।
21. ਜੇਕਰ ਚੁੰਬਕੀ ਪ੍ਰਵਾਹ 0.5 ਡਬਲਯੂਬੀ ਹੈ ਅਤੇ ਕਰੰਟ 2 ਏ ਹੈ ਤਾਂ ਕਿਸੇ ਕੋਇਲ ਦਾ ਇੰਡਕਟੈਂਸ ਕੀ ਹੈ?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 0.25 ਐੱਚ
b) 0.5 ਐੱਚ
c) 1 ਐੱਚ
d) 2 ਐੱਚ
ਉੱਤਰ: a) 0.25 ਐੱਚBOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੰਡਕਟੈਂਸ L=ΦIL = \frac{\Phi}{I}, ਤਾਂ L=0.52=0.25L = \frac{0.5}{2} = 0.25 H।
22. ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕਿਰਿਆ ਵੱਧ ਤੋਂ ਵੱਧ ਹੁੰਦੀ ਹੈ ਜਦੋਂ:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਵਰਤਮਾਨ ਜ਼ੀਰੋ ਹੈ
b) ਵੋਲਟੇਜ ਜ਼ੀਰੋ ਹੈ
c) ਬਾਰੰਬਾਰਤਾ ਜ਼ੀਰੋ ਹੈ
d) ਬਾਰੰਬਾਰਤਾ ਅਧਿਕਤਮ ਹੈ
ਜਵਾਬ: d) ਬਾਰੰਬਾਰਤਾ ਅਧਿਕਤਮ ਹੈ
ਵਿਸ਼ਲੇਸ਼ਣ: ਆਵਰਤੀ ਦੇ ਨਾਲ ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕਿਰਿਆ ਵਧਦੀ ਹੈ, ਅਤੇ ਇਹ ਸਭ ਤੋਂ ਵੱਧ ਬਾਰੰਬਾਰਤਾ 'ਤੇ ਇਸਦੇ ਵੱਧ ਤੋਂ ਵੱਧ ਮੁੱਲ ਤੱਕ ਪਹੁੰਚ ਜਾਂਦੀ ਹੈ।
23. ਜਦੋਂ ਸਪਲਾਈ ਵੋਲਟੇਜ ਨੂੰ ਅਚਾਨਕ ਹਟਾ ਦਿੱਤਾ ਜਾਂਦਾ ਹੈ ਤਾਂ ਇੱਕ RL ਸਰਕਟ ਵਿੱਚ ਕਰੰਟ ਦਾ ਕੀ ਹੋਵੇਗਾ?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਇਹ ਤੁਰੰਤ ਜ਼ੀਰੋ 'ਤੇ ਆ ਜਾਵੇਗਾ
b) ਇਹ ਤੇਜ਼ੀ ਨਾਲ ਘਟੇਗਾ
c) ਇਹ ਤੇਜ਼ੀ ਨਾਲ ਵਧੇਗਾ
d) ਇਹ ਸਥਿਰ ਰਹੇਗਾ
ਉੱਤਰ: ਅ) ਇਹ ਤੇਜ਼ੀ ਨਾਲ ਘਟੇਗਾ
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੱਕ RL ਸਰਕਟ ਵਿੱਚ, ਜਦੋਂ ਵੋਲਟੇਜ ਨੂੰ ਅਚਾਨਕ ਹਟਾ ਦਿੱਤਾ ਜਾਂਦਾ ਹੈ, ਤਾਂ ਕਰੰਟ ਇੰਡਕਟਰ ਵਿੱਚ ਸਟੋਰ ਕੀਤੀ ਊਰਜਾ ਦੇ ਕਾਰਨ ਤੇਜ਼ੀ ਨਾਲ ਘਟਦਾ ਹੈ।
24. ਪਾਵਰ ਸਪਲਾਈ ਵਿੱਚ ਇੰਡਕਟਰਾਂ ਦੀ ਮੁੱਢਲੀ ਵਰਤੋਂ ਕੀ ਹੈ?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਫਿਲਟਰਿੰਗ
b) ਵੋਲਟੇਜ ਵਧਾਉਣਾ
c) ਬਿਜਲੀ ਦੇ ਨੁਕਸਾਨ ਨੂੰ ਘਟਾਉਣਾ
d) ਮੌਜੂਦਾ ਨੂੰ ਨਿਯਮਤ ਕਰਨਾ
ਉੱਤਰ: a) ਫਿਲਟਰਿੰਗBOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
ਵਿਸ਼ਲੇਸ਼ਣ: ਇੰਡਕਟਰ ਆਮ ਤੌਰ 'ਤੇ ਫਿਲਟਰਿੰਗ ਲਈ ਪਾਵਰ ਸਪਲਾਈ ਵਿੱਚ ਵਰਤੇ ਜਾਂਦੇ ਹਨ, ਕਿਉਂਕਿ ਉਹ ਵਰਤਮਾਨ ਵਿੱਚ ਤਬਦੀਲੀਆਂ ਦਾ ਵਿਰੋਧ ਕਰਦੇ ਹਨ।
25. ਇੱਕ ਕੋਇਲ ਦਾ ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ 50 ohms ਹੈ। ਜੇਕਰ ਬਾਰੰਬਾਰਤਾ ਦੁੱਗਣੀ ਕੀਤੀ ਜਾਂਦੀ ਹੈ, ਤਾਂ ਨਵਾਂ ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ ਕੀ ਹੋਵੇਗਾ?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 50 ohms
b) 100 ohms
c) 200 ohms
d) 25 ohms
ਉੱਤਰ: b) 100 ohms
ਵਿਸ਼ਲੇਸ਼ਣ: ਕਿਉਂਕਿ XL=2πfLX_L = 2 \pi f L, ਬਾਰੰਬਾਰਤਾ ਨੂੰ ਦੁੱਗਣਾ ਕਰਨ ਨਾਲ ਪ੍ਰੇਰਕ ਪ੍ਰਤੀਕ੍ਰਿਆ ਦੁੱਗਣੀ ਹੋ ਜਾਵੇਗੀ।
26. ਦੋ ਕੋਇਲਾਂ ਵਿਚਕਾਰ ਆਪਸੀ ਪ੍ਰੇਰਣਾ ਨੂੰ ਇਸ ਦੇ ਅਨੁਪਾਤ ਵਜੋਂ ਪਰਿਭਾਸ਼ਿਤ ਕੀਤਾ ਗਿਆ ਹੈ:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਵੋਲਟੇਜ ਤੋਂ ਵਰਤਮਾਨ
b) ਕਰੰਟ ਵਿੱਚ ਬਦਲਣ ਲਈ ਚੁੰਬਕੀ ਪ੍ਰਵਾਹ ਵਿੱਚ ਤਬਦੀਲੀ
c) ਇੱਕ ਕੋਇਲ ਵਿੱਚ ਵੋਲਟੇਜ ਤੋਂ ਦੂਜੀ ਕੋਇਲ ਵਿੱਚ ਕਰੰਟ
d) ਕਰੰਟ ਤੱਕ ਚੁੰਬਕੀ ਪ੍ਰਵਾਹ
ਉੱਤਰ: c) ਇੱਕ ਕੋਇਲ ਵਿੱਚ ਵੋਲਟੇਜ ਤੋਂ ਦੂਜੀ ਕੋਇਲ ਵਿੱਚ ਕਰੰਟ
ਵਿਸ਼ਲੇਸ਼ਣ: ਮਿਉਚੁਅਲ ਇੰਡਕਟੈਂਸ ਇੱਕ ਕੋਇਲ ਦੀ ਦੂਜੀ ਕੋਇਲ ਵਿੱਚ ਵੋਲਟੇਜ ਪੈਦਾ ਕਰਨ ਦੀ ਯੋਗਤਾ ਨੂੰ ਮਾਪਦਾ ਹੈ ਜਦੋਂ ਪਹਿਲੀ ਕੋਇਲ ਵਿੱਚ ਕਰੰਟ ਬਦਲਦਾ ਹੈ।
27. ਇੱਕ ਟ੍ਰਾਂਸਫਾਰਮਰ ਵਿੱਚ, ਇੰਡਕਟੈਂਸ ਦੀ ਵਰਤੋਂ ਇਹਨਾਂ ਲਈ ਕੀਤੀ ਜਾਂਦੀ ਹੈ:
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਵੋਲਟੇਜ ਪਰਿਵਰਤਨ
b) ਮੌਜੂਦਾ ਨਿਯਮ
c) ਸਿਗਨਲ ਮੋਡੂਲੇਸ਼ਨ
d) ਊਰਜਾ ਸਟੋਰੇਜ
ਉੱਤਰ: a) ਵੋਲਟੇਜ ਪਰਿਵਰਤਨBOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
ਵਿਸ਼ਲੇਸ਼ਣ: ਟਰਾਂਸਫਾਰਮਰਾਂ ਵਿੱਚ, ਮੋੜ ਅਨੁਪਾਤ ਦੇ ਅਧਾਰ ਤੇ ਵੋਲਟੇਜ ਦੇ ਪੱਧਰ ਨੂੰ ਉੱਪਰ ਜਾਂ ਹੇਠਾਂ ਕਰਨ ਲਈ ਇੰਡਕਟੈਂਸ ਦੀ ਵਰਤੋਂ ਕੀਤੀ ਜਾਂਦੀ ਹੈ।
28. ਟਰਾਂਸਫਾਰਮਰਾਂ ਵਿੱਚ ਇੰਡਕਟੈਂਸ ਵਧਾਉਣ ਲਈ ਆਮ ਤੌਰ 'ਤੇ ਕਿਸ ਕਿਸਮ ਦੀ ਕੋਰ ਸਮੱਗਰੀ ਵਰਤੀ ਜਾਂਦੀ ਹੈ?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਹਵਾ
b) ਤਾਂਬਾ
c) ਸਿਲੀਕਾਨ ਸਟੀਲ
d) ਅਲਮੀਨੀਅਮ
ਉੱਤਰ: c) ਸਿਲੀਕਾਨ ਸਟੀਲ
ਵਿਸ਼ਲੇਸ਼ਣ: ਟਰਾਂਸਫਾਰਮਰ ਕੋਰਾਂ ਵਿੱਚ ਸਿਲੀਕਾਨ ਸਟੀਲ ਦੀ ਵਰਤੋਂ ਕੀਤੀ ਜਾਂਦੀ ਹੈ ਕਿਉਂਕਿ ਇਸ ਵਿੱਚ ਉੱਚ ਚੁੰਬਕੀ ਪਾਰਦਰਸ਼ੀਤਾ ਹੁੰਦੀ ਹੈ, ਜੋ ਇੰਡਕਟੈਂਸ ਨੂੰ ਵਧਾਉਂਦੀ ਹੈ।
29. ਇੰਡਕਟੈਂਸ ਦੇ ਰੂਪ ਵਿੱਚ ਲੰਬੇ ਸੋਲਨੋਇਡ ਲਈ ਹੇਠਾਂ ਦਿੱਤੇ ਵਿੱਚੋਂ ਕਿਹੜਾ ਸੱਚ ਹੈ?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) ਇੰਡਕਟੈਂਸ ਮੋੜਾਂ ਦੀ ਗਿਣਤੀ ਤੋਂ ਸੁਤੰਤਰ ਹੈ
b) ਸੋਲਨੋਇਡ ਦੀ ਲੰਬਾਈ ਦੇ ਨਾਲ ਇੰਡਕਟੈਂਸ ਵਧਦਾ ਹੈ
c) ਇੰਡਕਟੈਂਸ ਮੋੜਾਂ ਦੀ ਸੰਖਿਆ ਦੇ ਵਰਗ ਦੇ ਸਿੱਧੇ ਅਨੁਪਾਤੀ ਹੈ
d) ਇੰਡਕਟੈਂਸ ਕੋਰ ਸਮੱਗਰੀ ਤੋਂ ਸੁਤੰਤਰ ਹੈ
ਉੱਤਰ: c) ਇੰਡਕਟੈਂਸ ਮੋੜਾਂ ਦੀ ਸੰਖਿਆ ਦੇ ਵਰਗ ਦੇ ਸਿੱਧੇ ਅਨੁਪਾਤੀ ਹੈ
ਵਿਸ਼ਲੇਸ਼ਣ: ਮੋੜਾਂ ਦੀ ਸੰਖਿਆ ਦੇ ਵਰਗ ਦੇ ਨਾਲ-ਨਾਲ ਕੋਰ ਸਮੱਗਰੀ ਦੀ ਪਾਰਦਰਸ਼ੀਤਾ ਦੇ ਨਾਲ ਇੱਕ ਸੋਲਨੋਇਡ ਦੀ ਪ੍ਰੇਰਣਾ ਵਧਦੀ ਹੈ।
30. 100 ਮੋੜਾਂ, 10 ਸੈਂਟੀਮੀਟਰ ਦੀ ਲੰਬਾਈ, ਅਤੇ 1 ਸੈਂਟੀਮੀਟਰ ਦੇ ਕਰਾਸ-ਸੈਕਸ਼ਨਲ ਖੇਤਰ ਦੇ ਨਾਲ ਇੱਕ ਕੋਇਲ ਦੀ ਪ੍ਰੇਰਣਾ 10 mH ਹੈ। ਜੇਕਰ ਮੋੜਾਂ ਦੀ ਸੰਖਿਆ ਦੁੱਗਣੀ ਕੀਤੀ ਜਾਂਦੀ ਹੈ ਤਾਂ ਪ੍ਰੇਰਕਤਾ ਕੀ ਹੋਵੇਗੀ?
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )
a) 10 mH
b) 20 mH
c) 40 mH
d) 80 mH
ਉੱਤਰ: ਅ) 20 ਐਮ.ਐਚBOOK PURHCASE LINK -https://www.apnitest.in/shop/psssb-je-junior-engineer-electrical-book-and-test-series-7000-mcq-231?search=psssb#attribute_values=
ਵਿਸ਼ਲੇਸ਼ਣ: ਮੋੜਾਂ ਦੀ ਸੰਖਿਆ ਨੂੰ ਦੁੱਗਣਾ ਕਰਨ ਨਾਲ ਇੰਡਕਟੈਂਸ ਚੌਗੁਣਾ ਹੋ ਜਾਵੇਗਾ।
(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )(psssb je junior engineer electrical book psssb je junior engineer electrical test series punjab je junior engineer electrical book punjab je junior engineer electrical test series )(psssb je junior engineer electrical book psssb je junior engineer electrical test series 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