# NEET Online Exam: Trivia Quiz

23 Questions | Total Attempts: 231  Settings Create your own Quiz .

• 1.
The property of inductance offers opposition to which of the following quantities?
• A.

Constant current

• B.

Constant voltage

• C.

Changes in current

• D.

Changes in voltage

• 2.
What is the symbol for inductance?
• A.

L

• B.

H

• C.

XL

• D.

IND

• 3.
What is the unit of measurement for inductance?
• A.

Ohm

• B.

Rel

• C.

• D.

Henry

• 4.
If 9 volts are induced in a conductor when the current changes by 4.5 amperes in one second, what is the total inductance of the circuit?
• A.

1.5 henries

• B.

2.0 henries

• C.

13.5 henries

• D.

40.0 henries

• 5.
What physical property is similar to inductance?
• A.

Mass

• B.

Motion

• C.

Velocity

• D.

Inertia

• 6.
The difference in potential across a resistor, created by current through the resistor is an example of which of the following forces?
• A.

Resistive

• B.

Inertia

• C.

Inductive

• D.

Electromotive

• 7.
When a magnetic field moves through a stationary conductor, the electrons in orbit are affected in what manner?
• A.

They are dislodged from orbit

• B.

They move closer to their nucleus

• C.

They move closer to other orbiting electrons

• D.

They bunch up on one side of the nucleus

• 8.
When electrons are moved in a conductor by a magnetic field, a force known by which of the following terms is created?
• A.

Voltage

• B.

Electromotive

• C.

Potential difference

• D.

All of the above

• 9.
Self-induced emf is also known as what force?
• A.

Magnetic force

• B.

Inertial force

• C.

Electromotive force

• D.

Counter electromotive force

• 10.
According to Lenz’s Law, the induced emf produced by a change in current in an inductive circuit tends to have what effect on the current?
• A.

It aids a rise in current and opposes fall in current

• B.

It aids a fall in current and opposes a rise in current

• C.

It opposes either a rise or a fall in current

• D.

It aids either a rise or fall in current

• 11.
The direction of the induced voltage in an inductor may be found by the application of which of the following rules?
• A.

The left-hand rule for inductors

• B.

The left-hand rule for generators

• C.

The right-hand rule for conductors

• D.

The right-hand rule for motors

• 12.
The left-hand rule for generators states that the thumb of the left-hand points in the direction of motion of the:
• A.

Conductor

• B.

Magnetic field

• C.

Generator poles

• D.

Induced current

• 13.
When source voltage is removed from a current-carrying conductor, a voltage will be induced in the conductor by which of the following actions?
• A.

The decreasing voltage

• B.

The collapsing magnetic field

• C.

The reversal of current

• D.

The reversing electrical field

• 14.
The property of inductance is present in which of the following electrical circuits?
• A.

An ac circuit

• B.

A dc circuit

• C.

A resistive circuit

• D.

Each of the above

• 15.
How are inductors classified?
• A.

By core type

• B.

By conductor type

• C.

By the number of turns

• D.

By the direction of the windings on the core

• 16.
Normally, most coils have cores composed of either air or:
• A.

Copper

• B.

Carbon

• C.

Soft iron

• D.

Carbon steel

• 17.
The hollow form of nonmagnetic material found in the center of an aircore coil has what purpose?
• A.

To focus the magnetic flux

• B.

To support the windings

• C.

To act as a low resistance path for flux

• D.

To serve as a container for the core

• 18.
Which of the following factors will NOT affect the value of inductance of a coil?
• A.

Number of coil turns

• B.

Diameter of the coil

• C.

Conductor tensility

• D.

Core materials used

• 19.
When the number of turns is increased in a coil from 2 to 4, the total inductance will increase by a factor of?
• A.

Eight

• B.

Two

• C.

Six

• D.

Four

• 20.
Why do large diameter coils have greater inductance than smaller diameter coils, all other factors being the same?
• A.

Large diameter coils have more wire and thus more flux

• B.

Large diameter coils have less resistance

• C.

Small diameter coils have less resistance

• D.

Small diameter coils have large cemfs which oppose current flow

• 21.
If the radius of a coil is doubled, its inductance is increased by what factor?
• A.

One

• B.

Two

• C.

Eight

• D.

Four

• 22.
If the length of a coil is doubled while the number of turns is kept the same, this will have (a) what effect on inductance and (b) by what factor?
• A.

(a) Decrease, (b) by 1/4

• B.

(a) Decrease, (b) by 1/2

• C.

(a) Increase, (b) by 2 times

• D.

(a) Increase, (b) by 4 times

• 23.
A soft iron core will increase inductance because it has which of the following characteristics?
• A.

Low permeability and low reluctance

• B.

Low permeability and high reluctance

• C.

High permeability and high reluctance

• D.

High permeability and low reluctance

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