Question # 1

the current which flows from a point at higher. potential to point at lower potential is called.

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Electric current

Conventional current

Either of these

None of above

Power dissipated in a pure inductor is.

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Large

Small

Infinite

Zero

The electric intensity due to two oppositely charged plates is

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None of these

In the equation if f₂ > then

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The magnetic flux will be max, For an angle of:

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0°

60°

90°

180°

For automatic Switching of streetlight, the op amplifier is used as.

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Inductor

Converter

Comparator

Thermistor

Which one is pentavalent impurity

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Boron

Gallium

Antimony

Indium

The sum of positive and negative peak value called.

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R.M.S. value

P-P value

Peak value

Average value

If a charge is at rest in a magnetic field then force on charge is

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Zero

Double

One fourth

Four times

Mutual induction play role in.

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Generator

D.C. motor

Galvanometer

Transformer

The following gas was identified in the sun using spectroscopy

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Hydrogen

Helium

Carbon

Nitrogen

The unit for Plank's constant is:

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Js^-1

Jm

Js

Jm²

Which is true for both alpha particle and gama rays.

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They cause ionization in air

They can be deflected by electric field

They can be deflected by magnetic field

The y can penetrate a few millimeters of aluminium

The unit of Rh is.

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ms-1

m

m²

m^-1

Base of transistor is of order:

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10^-11m

10⁶m

10^-8m

10^-6m

Most of the electrons in the base of an NPN transistor flow:

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Out of the base lead

Into the collector

Into the emit

Into the base supply

The sum of electric and magnetic force is called.

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Maxwell force

Lorentz force

Newton's force

Centripetal force

The photon with energy greater than 1.02 MeV can interact with matter as.

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Photoelectric effect

Compton effect

Pair production

annihilation of matter

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