SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
A _______ works on the principle of dynamically induced EMF?

Transformer

Generator

Motor

Choke

Transformer

Generator

Motor

Choke

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SSC JE Electrical 2019 with solution SET-2
If the AC voltage and current are given by the following expressions?
v = 200sin (314t — 60°)
i = 50sin (720t), then what is the phase relation between them?

Voltage leads current by 60°

Voltage lags current by 60°

Can’t be determined

Voltage and current are in phase

Voltage leads current by 60°

Voltage lags current by 60°

Can’t be determined

Voltage and current are in phase

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SSC JE Electrical 2019 with solution SET-2
The candle power of a lamp placed normal to a working plane is 60 CP. Find the distance if the illumination is 15 lux?

1.5 meters

2.5 meters

4 meters

2 meters

1.5 meters

2.5 meters

4 meters

2 meters

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SSC JE Electrical 2019 with solution SET-2
If a transformer has N1 = N2 = 1 : 1, then the transformer is a/an

Power transformer

Potential transformer

Current transformer

Isolation transformer

Power transformer

Potential transformer

Current transformer

Isolation transformer

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SSC JE Electrical 2019 with solution SET-2
Which of the following is NOT an expression to find self-inductance?

Nφ/I

N2/S

N2μoμrA/I

Nφ

Nφ/I

N2/S

N2μoμrA/I

Nφ

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SSC JE Electrical 2019 with solution SET-2
For a three-phase induction motor slip at No Load ÷ slip at Full Load

Always equal to zero

Always equal to one

Always less than one

Always less than one

Always equal to zero

Always equal to one

Always less than one

Always less than one

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