Question # 1

1 kg mass will be equivalent to energy.

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9 x 10⁸ J

9 X 10¹² J

9 X 10¹⁶ J

9 X 10¹⁹ J

Shunt resistance is

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Low resistance

Zero resistance

High resistance

Impedance

Magnetic induction can be measured in units of.

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Tesla

Gauss

Weber/m2

All of the above

The value of Rydberg constant is

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1.0974 x 10⁷ m^-1

1.0974 x 10^-7 m^-1

1.0974 x 10⁶ m^-1

1.0974 x 10^-6 m^-1

A capacitor is perfect in insulator for.

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Alternating current

Sparking current

Eddy current

Direct current

How many neutrons are there in the nuclide Zn⁶⁶?

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22

30

36

66

An electron miroscope emplys which to one of the following particles?

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Electron ahve a wave nature

Electrons can be focused by an electric field

Electrons can be focused by a magnetic field

All of the above

In a pure inductive A.C. circuit the current.

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Lags behind voltage by 90 ^o

Leads the voltage by 90 ^o

In phase with voltage

Leads the voltage by 270 ^o

A battery move a charge of 40 C around a circuit at constant rate in 20 Sec. The current will be.

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2 A

0.5 A

80 A

800 A

Donor impurities are

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Germanium, silicon

Indium, galium

Antimony, arsenic

Diamond, carbon

If the distance between the two charged bodies is halved, the force between them becomes.

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Double

Half

Four times

One times

Kirchhoff's voltage rule is a way of stating conservation of.

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Mass

Charge

Energy

Momentum

If the coil is wound on iron core, the flux through it.

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Decreases

Becomes zero

Increases

Remains constant

In a transistor, collector current is controlled by:

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Collector voltage

Base current

Collector resistance

All of the above

In frequency modulation which factor changed.

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Amplitude of charge carriers

Frequency of charge carriers

Amplitude of signal

Frequency of signal

The value of capacitive reactance is given by

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Xc = VI

All of above

A moving charge is surrounded by:

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2 Fields

3 Fields

4 Fields

None of these

The jerks in D.C. motor are created by the use of.

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Armature

Commutators

Split rings

Source of emf

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