A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

SSC JE Electrical 2019 with solution SET-1
A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

0.4 V

−4 V

−2.5 V

−10 V

0.4 V

−4 V

−2.5 V

−10 V

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SSC JE Electrical 2019 with solution SET-1
Identify the INCORRECT statement with regards to synchronous motors

The field winding is placed on the rotor

It is a constant speed motor

It is a self-starting machine

The armature winding is placed on the stator

The field winding is placed on the rotor

It is a constant speed motor

It is a self-starting machine

The armature winding is placed on the stator

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SSC JE Electrical 2019 with solution SET-1
The output of the logic circuit given below represents the gate.

NOR

NAND

AND

OR

NOR

NAND

AND

OR

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SSC JE Electrical 2019 with solution SET-1
A synchronous motor runs at 600rpm, which of the following case is true?

P= 12, f = 50 Hz

P = 10, f = 60 Hz

P = 8, f = 50 Hz

P = 12, f = 60 Hz

P= 12, f = 50 Hz

P = 10, f = 60 Hz

P = 8, f = 50 Hz

P = 12, f = 60 Hz

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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?

10Ω

20Ω

40Ω

30Ω

10Ω

20Ω

40Ω

30Ω

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SSC JE Electrical 2019 with solution SET-1
The below symbol which is used in single line diagrams represents

Potential transformer

Circuit breaker

Power transformer

Current transformer

Potential transformer

Circuit breaker

Power transformer

Current transformer

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

SSC JE Electrical 2019 with solution SET-1 Identify the INCORRECT statement with regards to synchronous motors

SSC JE Electrical 2019 with solution SET-1 The output of the logic circuit given below represents the gate.

SSC JE Electrical 2019 with solution SET-1 A synchronous motor runs at 600rpm, which of the following case is true?

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 The below symbol which is used in single line diagrams represents

SSC JE Electrical 2019 with solution SET-1
A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

SSC JE Electrical 2019 with solution SET-1
Identify the INCORRECT statement with regards to synchronous motors

SSC JE Electrical 2019 with solution SET-1
The output of the logic circuit given below represents the gate.

SSC JE Electrical 2019 with solution SET-1
A synchronous motor runs at 600rpm, which of the following case is true?

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
The below symbol which is used in single line diagrams represents