Question # 1

One weber is equal to.

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N A-1

N m-1 A

N mA-1

N m-1 A-1

Two magnetic lines of force

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Out near the poles

Never cut each other

Cut at a neutral point

Cut according to position of the magnet

What is the value of earth's magnetics fields.

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5 G

50 G

100 G

500 G

If air is replaced by any other dielectric medium, the force between two charges.

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Decreases

Increases

Remain the same

Becomes infinity

Which electrical component uses a low current circuit to switch a high current ON or OFF.

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Capacitor

Diode

Reed rely

Thermistor

Which of the following materials has highest magnetic suscaptibility.

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Uranium

aluminium

Platinum

Sodium

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

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Energy

Mass

Momentum

Torque

How power factor of a circuit can be improved.

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Using capacitors

Using cokes

Using resistors

All of these

What is the smalless total resistance using only a 6 ohm and 12 ohm resistors.

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2 Ohm

3 Ohm

4 Ohm

6 Ohm

Eddy current can be minimized by

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Moving the conductor rapidly

Moving the conductor slowly

Using a metallic core

Using a laminated core

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 rms value of alternating current is always

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Infinity

Unity

Positive

Negative

Conductance is the reciprocal of

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Inductance

Capacitance

Resistance

Admittance

Under which of the following conditions current in a circuit is wattles.

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When inductance in the circuit is zero

When resistance in the circuit is zero

When current is alternating

When resistance and inductance both are zero

The resistance of 10 micro F capacitance, when connected to A D.C. circuit is.

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Zero

Unity

-1

Infinity

Why a positive charged object is made neutral by someone touching it.

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Electrons flow from the object

Proton flow onto the object

Protons flow from the object

Proton flow onto the object

The SI unit of magnetic flux is

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gauss

Maxwell

Oersted

Water

What is the degree of magnetization of a material.

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Susceptibility

Ablitity

Retentivity

Capacity

The long distance transmission of electrical energy is done at.

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High potential and low current

High potential and highs current

Low potential and high current

Low potential and low current

A straight copper wire a moved in a uniform magnetic field such that it cuts the magnetic lines of force then.

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emf will not be induced

emf will beinduced

sometimes emf will be induced and sometimes not

The number of turns iin the coil increases

The process due to which current flows only during alternate half cycle is known as.

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Filtration

saturation

Half wave rectification

Full wave rectification

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