Deck 10: Measuring Instruments

Question 1

An ammeter is connected in with the load to permit the load to limit current flow.

A) parallel
B) series

Answer 1

B

Question 2

When the connection of a meter to the circuit changes the entire circuit operation, this is known as the effect.

A) impedance
B) hatching
C) crossing
D) loading

Answer 2

D

Question 3

What meter features a wire coil suspended between permanent magnet poles and operates on very tiny amounts of current?

A) a galvanometer
B) a digital ammeter
C) a voltmeter
D) a wattmeter

Answer 3

A

Question 4

What meter measures true power in a circuit?

A) ohmmeter
B) wattmeter
C) voltmeter
D) ammeter

Question 5

What meter is designed to be connected directly across the power source?

A) voltmeter
B) analog meter
C) galvanometers
D) ammeter

Question 6

What is one of the most common analog meter movements?

A) d'Arsonval movement
B) moving iron
C) plunger
D) concentric vane

Question 7

What meter must NEVER be connected to a circuit when the circuit power is turned on?

A) an ammeter
B) a voltmeter
C) an ohmmeter
D) a wattmeter

Question 8

The resistors are connected in parallel with the meter on some ranges and in series for other ranges when a(n) _____ is used.

A) Ayrton shunt
B) current transformer
C) d'Arsonval shunt
D) moving vane transformer

Question 9

The d'Arsonval meter movement is operated by applying current to the coil.

A) AC
B) DC

Question 10

What meter measures an amount of voltage during a period of time and produces a two-dimensional image?

A) a Wheatstone bridge
B) a bridge circuit
C) an oscilloscope
D) a low impedance voltage tester

Question 11

Most voltmeters are voltmeters, meaning they are designed to use one meter movement to measure several ranges.

A) full scale
B) single range
C) multirange
D) omnirange

Question 12

A test meter that uses a scale and pointer to indicate values is a(n) meter.

A) analog
B) digital

Question 13

A(n) ammeter operates on more than one range by connecting the meter movement to different shunts.

A) full scale
B) single range
C) multirange
D) omnirange

Question 14

A low-resistance device used to conduct most circuit current away from the meter movement is an ammeter _.

A) spike
B) shunt
C) resistor
D) limiter

Question 15

The low-impedance voltage tester is most suitable for use in .

A) low voltage circuits
B) low power circuits
C) circuits that have low impedance
D) high power circuits

Question 16

What meter measures resistance?

A) an ammeter
B) an ohmmeter
C) a voltmeter
D) a wattmeter

Question 17

The meter is only connected to one of the lines supplying power when using a(n) ammeter.

A) Ayrton
B) d'Arsonval
C) clamp-on
D) shunted

Question 18

A voltmeter has a very resistance connected in series with the meter movement.

A) low
B) high

Question 19

Moving coil meter is another name for the meter movement.

A) d'Arsonval
B) moving iron
C) plunger
D) concentric vane

Question 20

The series ohmmeter is used to measure values of resistance.

A) low
B) high

Question 21

What is measured by the Wheatstone bridge?

A) inductance
B) impedance
C) capacitance
D) resistance

Question 22

An ammeter has a typical impedance of less than ohm.

Question 23

A shunt device that remains connected to the meter movement and thereby eliminates contact resistance problems is the shunt.

Question 24

One of the most common devices used to measure values of resistance, inductance, and capacitance accurately is a(n) circuit.