NEET Online Exam: Trivia Quiz
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- 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.
Farad
- 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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