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Module 3b revision (AC elec)

Authored by Craig Guest

Physics, Science

11th Grade - University

Used 68+ times

Module 3b revision (AC elec)
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23 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Mutual Inductance is NOT dependant on

permeability

size of coils

position

density

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The co-efficient of coupling that represents the ratio of all of the flux from one coil cutting into another:

0

2

1

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The ability of a material to retain an amount of residual magnetic field after the magnetising force is removed:

Coercive Force

Retentivity

Saturation

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A transformer with turns ratio 1:6 is a "step up" transformer. What is stepped up?

Current

Voltage

Inductance

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

2 identical inductors of 10H are in series. Total inductance:

20H

5H

100H

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

RMS value of a 100V peak AC power supply:

70.7V

7.07V

63.6V

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many alternations in a cycle?

1

2

4

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