Question # 1

One kilowatt-hour is the amount of energy that is consumed by a ........ applicance in one hour.

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1000 watt

100 watt

10000 watt

500 watt

The deficiency of elctrons in outermost shell of silicon atom is called.

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Valent shell hole

Doping

Hole

None of these

The potential of the neutral wire is.

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Zero

+220 volts

220 volts

Changing

Frequency of ultrasound is.

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Less than 20 Hz

20 KHz

30 KHz

More than 20 khn

The SI unit of resistance:

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Volt

Ampere

Ohm (Ω)

Farad

Bagasse is used as in.

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Sugar mills

Cattle feeds

Alcohol

Cotton textile

Skylab enters back into atmosphere.

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In 1979

In 1990

In 2000

In 2003

The number of hovering satellites which can send transmissions to all over the world:

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one

Two

Three

Four

The constant in Ohm's law is.

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Current

Resistance

Potential difference

Charge

Resistance ' R" is equal to.

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I

V

V/I

I/V

A,C electric supply at homes:

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240 volt

50 volt

220 volt

1000 volt

The solar energy falling on the atmosphere of Earth is almost:

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1.2 Kilowatt per square meter

1.4 kilowatt per square meter

1.6 kilowatt per square meter

1.8 kilowatt per square meter

How many electrons Guns are used in colour T.V?

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One

Two

Three

Four

In Brazil, most of the vehicles run with:

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petrol

Bio gas

Alcohol

CNG

The energy produced by the breakdown of chemical bond between atoms:

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Light energy

chemical energy

electrical energy

kinetic energy

The device use to store electric current:

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Fuse

Switch

Resistor

Capacitor

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