SSC JE ELECTRICAL 2019 WITH SOLUTION SET-2 QUIZ

Form Factor × Peak Factor =?

Maximum Value/RMS Value

Average Value Maximum Value

RMS Value/Average Value

Maximum Value/Average Value

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1 kcal is approximately equal to

4200 watt-sec

4.2 joules

420 joules

420 watt-hour

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The flux while crossing air gap tends to bulge outwards, thereby increasing the effective area of the gap, this effect is known as

Hopkinson’s effect

Fringing effect

Hall effect

Stroboscopic effect

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For indoor lighting the range of space : height is

2 : 3

3 :4

5 : 6

1 : 2

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The wattage rating of a single-phase induction motor used as a ceiling fan will be in the range of

200 to 500 W

10 to 50 W

600 to 800 W

50 to 150 W

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In the salient pole of the phase synchronous machine, the rotor will have

Larger diameter, shorter axial length

Larger diameter, larger axial length

Smaller diameter, larger axial length

Smaller diameter, smaller axial length

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A transistor can be made to operate as a switch by operating it in which of the following regions?

Active region, saturation region

Active region, cut-off region

Active region

Saturation region, cut-off region

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In an alternator, if α = 60°, then find the pitch factor?

1

√3/2

1/2

0

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During the ______ period the power supply to the motor is cut-off and the train is allowed to run due to its own momentum?

Coasting

Free running

Braking

Notching up

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In a 4 pole. 20 kW, 200 V wave wound DC shunt generator, the current in each parallel path will be

50 A

100 A

25 A

10 A

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