An electric motor in which both the rotor and stator fields rotate with the same speed is called

SSC JE Electrical 2019 with solution SET-1
An electric motor in which both the rotor and stator fields rotate with the same speed is called

Synchronous motor

Induction motor

Universal motor

DC motor

Synchronous motor

Induction motor

Universal motor

DC motor

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SSC JE Electrical 2019 with solution SET-1
What is the reason behind using a centrifugal switch in a single-phase induction motor?

To out in the capacitor during running conditions

To cut-off the starting winding at an appropriate instant

To protect the motor from overloading

To improve the starting performance of the motor

To out in the capacitor during running conditions

To cut-off the starting winding at an appropriate instant

To protect the motor from overloading

To improve the starting performance of the motor

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SSC JE Electrical 2019 with solution SET-1
The trade name of the Nickel-Copper alloy, that is used as a heating element is:

Nichrome

Steel

Eureka

Kanthal

Nichrome

Steel

Eureka

Kanthal

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SSC JE Electrical 2019 with solution SET-1
A coil is wound with 50 turns and a current 8A produces a flux of 200μWb. Calculate the inductance of the coil

0.125 mH

1.25 mH

0.25 mH

2.5 mH

0.125 mH

1.25 mH

0.25 mH

2.5 mH

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SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

30Ω

20Ω

10Ω

40Ω

30Ω

20Ω

10Ω

40Ω

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SSC JE Electrical 2019 with solution SET-1
Which of the following is the correct relation regarding coupled coils?

M = (L1 − L2)/2

M = (L1 + L2)/2

M > (L1L2)0.5

M ≤ (L1L2)0.5

M = (L1 − L2)/2

M = (L1 + L2)/2

M > (L1L2)0.5

M ≤ (L1L2)0.5

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 An electric motor in which both the rotor and stator fields rotate with the same speed is called

SSC JE Electrical 2019 with solution SET-1 What is the reason behind using a centrifugal switch in a single-phase induction motor?

SSC JE Electrical 2019 with solution SET-1 The trade name of the Nickel-Copper alloy, that is used as a heating element is:

SSC JE Electrical 2019 with solution SET-1 A coil is wound with 50 turns and a current 8A produces a flux of 200μWb. Calculate the inductance of the coil

SSC JE Electrical 2019 with solution SET-1 Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1 Which of the following is the correct relation regarding coupled coils?

SSC JE Electrical 2019 with solution SET-1
An electric motor in which both the rotor and stator fields rotate with the same speed is called

SSC JE Electrical 2019 with solution SET-1
What is the reason behind using a centrifugal switch in a single-phase induction motor?

SSC JE Electrical 2019 with solution SET-1
The trade name of the Nickel-Copper alloy, that is used as a heating element is:

SSC JE Electrical 2019 with solution SET-1
A coil is wound with 50 turns and a current 8A produces a flux of 200μWb. Calculate the inductance of the coil

SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1
Which of the following is the correct relation regarding coupled coils?