A synchronous motor runs at 600rpm, which of the following case is true?

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

P = 12, f = 60 Hz

P = 8, f = 50 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

P = 12, f = 60 Hz

P = 8, f = 50 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

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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

DC motor

Universal motor

Synchronous motor

Induction motor

DC motor

Universal motor

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SSC JE Electrical 2019 with solution SET-1
A single-phase circuit’s power factor can be measured with a/an

Combination of a voltmeter and ammeter

Wattmeter alone

Combination of a voltmeter, ammeter, and wattmeter

Energy meter alone

Combination of a voltmeter and ammeter

Wattmeter alone

Combination of a voltmeter, ammeter, and wattmeter

Energy meter alone

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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

−10 V

−4 V

−2.5 V

0.4 V

−10 V

−4 V

−2.5 V

0.4 V

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SSC JE Electrical 2019 with solution SET-1
In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

90°

60°

0°

30°

90°

60°

0°

30°

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SSC JE Electrical 2019 with solution SET-1
In electric traction, the coefficient of adhesion is represented by

Φ

γ

λ

μ

Φ

γ

λ

μ

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SSC JE Electrical 2019 with solution SET-1

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 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 A single-phase circuit’s power factor can be measured with a/an

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 In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

SSC JE Electrical 2019 with solution SET-1 In electric traction, the coefficient of adhesion is represented by

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
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
A single-phase circuit’s power factor can be measured with a/an

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
In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

SSC JE Electrical 2019 with solution SET-1
In electric traction, the coefficient of adhesion is represented by