Question # 1

An alternating quantity (voltage or current) is completely known if we know its:

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Maximum

Frequency and phase

Effective value

Both (a) & (b)

Which component of the transistor has greater contrition of impurity.

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Base

Emitter

Collector

Emitter and collector

Bremsstrahlung radiation are examples of

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Atomic spectra

Molecular spectra

Continuous spectra

Discrete spectra

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

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Beta rays

Gama ryas

Alpha rays

Electron

An ECG records the _____ between points on human skin generated by electric process i the heart.

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Heart beat

Pulse rate

Pressure

Voltage

Low level radiations effects

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Less of hair

Ulceration

Drop of white blood cells

All

The ability of a body to return to its original shape is called.

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Strain

Stress

Elasticity

Plasticity

A galvanometer is an electrical instrument used to

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Measure resistance

Measure voltage

Detect passage of current

None of these

The unit for Plank's constant is:

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Js^-1

Jm

Js

Jm²

When a pot difference of 4 volt is applied across resistance, 10 J of energy is converted Find charge flows

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0.20 C

2.5 C

5.0 C

10.0 C

Force per unit charge is called:

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Gravitational force

Electric field intensity

Coulomb's force

None of these

Platinum wire becomes yellow at a temperature of.

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900^oC

1300^oC

1600^oC

500^oC

Yield stress is another name of

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Plasticity

Proportional limit

Elastic limit

Both (b) and (c)

The rest mass x ray photon is

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Infinite

Zero

1.67 X^-17 kg

All of the above

The value of e/m is smallest for

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Proton

Electron

Beta particle

Positron

The sum of positive and negative peak value called.

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R.M.S. value

P-P value

Peak value

Average value

The use of LDR is in the circuit of.

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Logic gate

Rectifier

Oscillator

High Switch

The value of capacitive reactance is given by

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Xc = VI

All of above

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