Meters

Question 1

A voltmeter must be _______.

A. Connected in a series
B. Places near a magnetic field
C. Connected in Parallel
D. Used in a d-energized circuit

Answer 1

C. Connected in parallel

Question 2

To increase the range of an ammeter, a _______ is added to the circuit.

A. Shunt resistor
B. Fixed coil
C. Series resistance
D. Moving coil

Answer 2

A. shunt resistor

Question 3

To increase the range of a voltmeter, a _______ is added to the circuit.

A. Fixed resistor
B. Series multiplier resistor
C. Shunt resistor
D. Series and parallel resistance

Answer 3

B. series multiplier resistor

Question 4

Which of the following meters is used to measure resistance of a circuit?

A. Ohmmeter
B. Voltmeter
C. Wattmeter
D. Ammeter

Answer 4

A. Ohmmeter

Question 5

What does it mean if the letters ‘OL’ appear on a DMM display?

A. The current in the circuit is too low to register
B. The meter is registering negative voltage
C. The meter is “out of limits”
D. The better in the meter is running low

Answer 5

C. The meter is ‘Out of Limits’

Question 6

What effect would a reverse polarity reading have on an analog meter?

A. It would cause the pointer to exceed the hugest number on the range.
B. It would cause the pointer to fall below zero.
C. It would cause the display to show numeral 1.
D. It would cause the display to start flashing

Answer 6

B. It would cause the pointer to fall below zero.

Question 7

If the meter indicates an ‘Out of Limits’, you should ____.

A. Move the range switch to a lower scale setting
B. Increase the current to the circuit
C. Disconnect the meter from the circuit
D. Use the autoranging feature to reduce the current

Answer 7

C. Disconnect the meter from the circuit

Question 8

A(n) _____ is a type of bypass that provides a parallel path for current flow when using an ammeter.

A. Series multiplier
B. Coil spring
C. Shunt resistor
D. Autorange

Answer 8

C. shunt resistor.

Question 9

On an ohmmeter, the full-scale deflection value is _____ of the meter face.

A. 0 ohms at the right side
B. 0 ohms at the left side
C. Infinite resistance at the right side
D. Infinite resistance at the left side

Answer 9

A. 0 ohms at the right side

Question 10

Do not apply power to the component or meter circuit when using a(n)
______.

A. Ammeter
B. Ohmmeter
C. Voltmeter
D. Wattmeter

Answer 10

B. ohmmeter.