Question # 1

V²/R=:

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Power

Energy

Voltage

Resistance

The voltage is decreased by:

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Step-up transformer

Step-down transformer

A.C. generator

D.C. Motor

The frequency of silent whistle is:

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20,000 Hz – 25000Hz

2000 Hz – 2500Hz

200 KHz – 2000 Hz

25000 KHz

A transformer has Np =100 and Ns =500 , if 6 volt D.C is applied across its primary, the induced voltage.

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0 V

30 V

45 V

60 V

An example of input device computer is:

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Keyboard

printer

monitor

RAM

An example of input device of computer is.

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Key board

Printer

Monitor

RAM

Static electricity can be generated by:

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Lubrication

Friction

Motion

Smaller the objects

a fuse is connected in series with:

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neutral wire

live wire

earth wire

cable wire

Image formed on a camera is:

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real,invertred, and diminished

virtual, upright and diminshed

virtual, upright and magnified

real, inverted and magnified

In A.C. generator flux will be zero if coil is to the field.

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90^o

45^o

Parallel

Inclined

1 Pico farad is equal to:

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10^-9F

10¹²F

10^-12F

10^-6F

Old people can not hear sound above then _____ Hz

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1000

15000

20000

10000

Analogue quantity is:

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Time

Pressure

Distance

All of these

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Physics 10th Class English Medium Online Test MCQs With Answers

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