Unit 19. Chapter. Electrical metering devices

Question 1

Two basic types of electrical test meters are

Answer 1

Analog and digital

Question 2

Two examples of where a DC test meter would be used

Answer 2

Automotive wiring and power plant battery vault

Question 3

Steps used to test electrical circuit for voltage

Answer 3

Select correct type of circuit
Set voltage range to highest setting and connect meter
Reduce voltage range until reading is in center of scale

Question 4

Why must a voltmeter have high resistence

Answer 4

Voltmeter must not cause a current drain on a the voltage source or around electrical load

Question 5

How is increased load determined

Answer 5

By an increased current flow

Question 6

The resistance of an ammeter must be

Answer 6

Very low

Question 7

Device used to measure resistance

Answer 7

Ohmmeter

Question 8

What is a megger

Answer 8

An ohmmeter that measures millions of ohms usually used to measure resistance of an insulator

Question 9

A meter which measures the amount of power used over a period of time

Answer 9

Kilowatt meter

Question 10

Purpose of a mutiplier

Answer 10

To determine actual power consumption, multiply meter reading by multipliers