A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

SSC JE Electrical 2019 with solution SET-1
A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

215 V

210 V

200 V

190 V

215 V

210 V

200 V

190 V

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SSC JE Electrical 2019 with solution SET-1
With the current direction marked in the circuit shown, the net voltage applied is

V2

(V2 − V1)

V1

−(V2 − V1)

V2

(V2 − V1)

V1

−(V2 − V1)

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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

Universal motor

DC motor

Synchronous motor

Induction motor

Universal motor

DC motor

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SSC JE Electrical 2019 with solution SET-1
Lamp efficiency is measured in

Candela/watt

Lumen/lux

Lumen/watt

Lux/watt

Candela/watt

Lumen/lux

Lumen/watt

Lux/watt

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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
______ Opposes the change in circuit voltage

Capacitance

Inductive reactance

Inductance

Resistance

Capacitance

Inductive reactance

Inductance

Resistance

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

SSC JE Electrical 2019 with solution SET-1 With the current direction marked in the circuit shown, the net voltage applied is

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 Lamp efficiency is measured in

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 ______ Opposes the change in circuit voltage

SSC JE Electrical 2019 with solution SET-1
A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

SSC JE Electrical 2019 with solution SET-1
With the current direction marked in the circuit shown, the net voltage applied is

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
Lamp efficiency is measured in

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
______ Opposes the change in circuit voltage