Inductors - General Questions

Directions to Solve

Inductors - General Questions

When a load is not connected to the secondary of a transformer:

A.	primary current is zero
B.	primary current is inversely proportional to primary impedance
C.	secondary voltage is zero
D.	secondary voltage is proportional to primary impedance

Answer: Option A

Explanation:

No answer description available for this question.

What is the phase angle between the source voltage and current, when a 100 mH inductor with a reactance of 6 k omega 2 , and a 1 k omega 2 resistor are in series with a source?

A.	0.1 degrees
B.	9.0 degrees
C.	61.0 degrees
D.	81.0 degrees

Answer: Option D

Explanation:

No answer description available for this question.

An inductor is in series with a voltage source, an open switch, and a resistor. The instant the switch is closed, the inductor acts like

A.	a short
B.	an open
C.	a resistor
D.	a voltage source

Answer: Option C

Explanation:

No answer description available for this question

What are the properties that determine the inductance of a coil?

A.	Length of wire, number of turns, type of core material, length of core
B.	Number of turns, type of wire, length of core, and cross-sectional area of core
C.	Type of core material, number of turns, cross-sectional area of core, and length of core
D.	Type of core material, type of wire, number of turns, and cross-sectional area of core

Answer: Option C

Explanation:

No answer description available for this question

Counter emf or induced voltage is:

A.	inversely proportional to the change in current
B.	directly proportional to the change in time
C.	directly proportional to the inductance in henrys
D.	inversely proportional to the inductance in henrys

Answer: Option C

Explanation:

No answer description available for this question

What is electromagnetism?

A.	the magnetic field generated around a conductor when a current passes through it
B.	the magnetic field generated in a conductor by an external voltage
C.	the voltage caused by a magnetic field in a conductor
D.	the current generated by an external magnetic field

Answer: Option A

Explanation:

No answer description available for this question.

A voltage is induced in a transformer secondary winding by the action of the:

A.	secondary magnetic field
B.	primary turns ratio
C.	primary magnetic field
D.	secondary counter emf

Answer: Option C

Explanation:

No answer description available for this question

What is the total inductance assuming no mutual inductance?

mcq8_1031_1

A.	0 mH
B.	0.69 mH
C.	12 mH
D.	24 mH

Answer: Option B

Explanation:

No answer description available for this question

Inductors - General Questions

Inductors - General Questions

Questions & Answers

Interviews

Jobs

Results

Admission

Admit Card

Answer Key