Question # 1

Transistors are made from

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Plastics

Metals

Insulator

Doped semi conductors

If force in the direction of velocity of conductor, then induced current is directed,

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Anti clockwise

Clock wise

At equilibrium

None of above

The phase angle of a series RLC circult at resonant frequency is

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1/2

sigma

Zero

sigma /4

In nuclear radiation , track of alpha particle is.

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Thin

Discontinuous

Erratic

Continuous

The SI unit of magnetic induction 'B' Tesla is equal to.

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NA-1m-1

Nam-1

NA-1 m

Na2m-1

In Series resonance circuit the impedance of circuit art resonance frequency, is

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Maximum

Minimum

It is unequal to R

None of above

Which one of the following is not affected by electric or magnetic field.

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Beta rays

Gama ryas

Alpha rays

Electron

the number of terminals in a semiconductor diode are

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2

3

4

5

The mass spectrum of naturally occurring neon shows the most abundant isotope has atomic mass.

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19

20

21

22

In a certain circuit, I_{B = 40 µA,}I_C= 20 mA

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450 amp

0.45 amp

5 m amp

500 amp

The mathematical symbol for NOR operation is

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X = A . B

X = A + D

The physical quantity related to photon, that does not change in Compton scattering is.

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Energy

Speed

Frequency

Wavelength

The movement of conductor in magnetic field produces electrical current was discovered in:

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1931

1731

1842

1831

For electromagnetic waves, Maxwell generalized

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Gauses law for magnetism

Gauses law for eletricity

Fradays law

Amperes law

Reverse current flows due to

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Majority charge carriers

Minority charge carriers

Electrons

Holes

Flux through any closed surface is:

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1/ε²_∘ times the total charge enclosed in it

ε²_∘ time the total charge enclosed in it

1/ε_∘ ties the total charge enclosed in ti

ε_∘ time the total charge enclosed in it

When charge particle enter perpendicular to magnetic field, the path followed by it is:

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A helix

A circle

Straight line

Ellipes

I amu =

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9.31 MeV

931 MeV

9.031 MeV

None of above

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