Question # 1

Inductance are measured in

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Coulombs

Volts

Henrys

Farads

The basic quantity used to describe the state of magnetization of a substance is the

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Magnetic strength

Magnetic susceptibility

Magnetic moment

Magnetic moment per unit volume

In comparison with the electrostatic force between two electrons the electrostatic force between two protons is.

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Zero

Smaller

Greater

Same

The process of converting A.C and D.C. is known as

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Amplification

_Filtration

Rectification

Saturation

Why are charged capacitors dangerous.

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They can leak a harmful chemicals

They can cause loss of vision

They can release a lethal charge

They can release gama rays.

A device used to measure the strain of an object and it is a type of resistor that changes value with applied strain is a

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thermistor

Strain gauge

Thermocouple

Potentiometer

Which one is not a semiconductor.

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Go As

Ge

Sc

In

In a parallel resonant circuit, at resonance

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Current is maximum

Voltage is maximum

Impedance is minimum

Impedance is zero

The field inside a hollow spherical conductor is.

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Constantin zero

Constant but not necessarily zero

A function of charge on sphere

a function of distance from the centre

What is the traditional name for a capacitor

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Choke

Condenser

Transformer

Inductor

A system of the equal and opposite point charges separated by a small distance is called.

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A capacitor

A dipole

An iinductor

A di electric

Which electrical quantity has the same units as electromotive force.

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Charge

Current

Potential difference

Power

In a crystal lattice

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Atoms are arranged in an order way

Atoms are arranged in a random way

Holes are arranged in an order way

Electrons are arranged in an order way

Which material has the highest magnetic susceptibility.

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Steel

Brass

Iron

Wood

The Lenz's law is also a statement of the law of conservation of.

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Energy

Mass

Momentum

Torque

The maximum field that a dielectric material can with stand whiteout breaking down is called its.

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Di electric strength

Magnetic strength

Capacity

Resistance

A plug connoted to a table lamp contains a 3 A fuse Why is the fuse needed.

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To increase the resistance of the circuit

To make it easier for the current to flow

To protect the wiring form overheating

To reduce the voltage across thelamp

When the frequency of A.C in L - C- R circuit is incrased the impedance of L-C-R circuit.

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Increase

Decrease

Remain unchanged

First decrease and then increases

The SI unit of magnetic flux is

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gauss

Maxwell

Oersted

Water

Which onw of the following is deflected by an electric field.

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Alpha particles

Gama rays

Neutrons

x rays

A transformer is needed to convert a mains 240 V supply into a 12 V supply it there are 200 turns on the primary coil, how many turns should there be on the secondary coil.

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100

200

400

600

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