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

200 V

210 V

190 V

215 V

200 V

210 V

190 V

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SSC JE Electrical 2019 with solution SET-1
Which of the following losses is together called iron losses?

Hysteresis loss and copper loss

Hysteresis loss and frictional loss

Eddy current loss and hysteresis loss

Eddy current loss and frictional loss

Hysteresis loss and copper loss

Hysteresis loss and frictional loss

Eddy current loss and hysteresis loss

Eddy current loss and frictional loss

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SSC JE Electrical 2019 with solution SET-1
Which of the following should be used under no-load conditions?

Air-break switch

Rewireable fuse

Isolator

Circuit breaker

Air-break switch

Rewireable fuse

Isolator

Circuit breaker

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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?

20Ω

30Ω

40Ω

10Ω

20Ω

30Ω

40Ω

10Ω

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SSC JE Electrical 2019 with solution SET-1
The voltmeter is shown in the circuit reads:

2.4 V

1.2 V

12 V

24 V

2.4 V

1.2 V

12 V

24 V

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SSC JE Electrical 2019 with solution SET-1
Identify the important feature of a DC series motor

Medium starting torque

Low starting torque

Zero starting torque

High starting torque

Medium starting torque

Low starting torque

Zero starting torque

High starting torque

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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 Which of the following losses is together called iron losses?

SSC JE Electrical 2019 with solution SET-1 Which of the following should be used under no-load conditions?

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 voltmeter is shown in the circuit reads:

SSC JE Electrical 2019 with solution SET-1 Identify the important feature of a DC series 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

SSC JE Electrical 2019 with solution SET-1
Which of the following losses is together called iron losses?

SSC JE Electrical 2019 with solution SET-1
Which of the following should be used under no-load conditions?

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 voltmeter is shown in the circuit reads:

SSC JE Electrical 2019 with solution SET-1
Identify the important feature of a DC series motor