Question # 1

The standard group of bits in digital electronic is:

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5 bits

6 bits

7 bits

8 bits

Which statement is true about the magnetic poles?

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Unlike poles repel

Like poles attract

Magnetic poles do not effect each other

A single magnetic pole does not exist

The presence of a magnetic field can be detected by a

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small mass

Stationary positive charge

Stationary negative charge

Magnetic compass

The force on a current carrying conductor is maximum if angle between field and conductor is:

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0^o

90^o

180^o

45^o

The cathode ray oscilloscope consists of main parts:

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Two

Three

Four

Five

In NOT gate number of input terminals is/are:

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1

2

3

4

When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90° is called:

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Angle of incidence

Critical angle

Angle of refraction

Angle of deviation

In electric motor, the brushes are made of:

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Lead

Graphite

Iron

Wood

The turn ratios of a transformer is 10. It means.

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I_s = 10I_p

N_s = N_p

N_s = 10 N_p

V_s =V_p /10

Optical fibres works on the principle of:

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Reflection

Refraction

Total internal reflection

Diffraction

Eight bits combine to form:

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A byte

Megabyte

Kilobyte

Gigabyte

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attract a neutral charge

Repels a neutral charge

Transformer works on _______ supply.

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A.C

D.C

Battery

Both A and B

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