Deck 15: Test Equipment

Question 1

The correct piece of test equipment that you would use to determine the quality of the insulation of a motor winding would be a(n) ____.

A) megohmmeter
C) clamp-on ammeter
B) ohmmeter
D) oscilloscope

Answer 1

A

Question 2

If you were to measure the amount of current flowing in a circuit, you would use a(n) ____.

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

Answer 2

B

Question 3

Before using the multimeter, you should visually inspect the meter and test leads thoroughly.

Answer 3

True

Question 4

When measuring the resistance of a circuit, you should ____.

A) test the circuit energized but not operating
B) test the circuit energized and operating partially
C) test the circuit energized and operating fully
D) test the circuit de-energized

Question 5

With the Volts/Div. switch set to 5 mV, a sine wave measures 5.2 blocks with a 10x probe. The peak-to-peak value of this sine wave is ____.

A) 5.2 V
C) 26 mV
B) 260 mV
D) 5 mV

Question 6

When voltage is measured with the voltmeter portion of a digital multimeter, the leads should be connected ____ to the portion of the circuit being tested.

A) in series
C) in parallel
B) behind
D) in front of

Question 7

Using a 10x probe, one complete cycle of a sine wave spans 1.7 blocks when the Sec/Div switch is set to 5 sec. The frequency of this sine wave is ____.

A) 8.5 Hz
C) 117.65 mHz
B) 85 Hz
D) 1.18 Hz

Question 8

The peak-to-peak value of a sine wave is equal to ____.

A) twice the rms value
C) twice the peak value
B) 0.707 times the rms value
D) 1.14 times the average value

Question 9

Using a 1x probe, one complete cycle of a sine wave spans 2.8 blocks when the Sec/Div. switch is set to 10 msec. The period of this sine wave is ____.

A) 2.8 sec
C) 35.71 msec
B) 28 msec
D) 357.14 msec

Question 10

Oscilloscopes measure voltage with respect to ____.

A) ground
C) resistance
B) current
D) time

Question 11

What is the frequency of a sine wave with a cycle time of 1 msec?

A) 1 MHz
C) 200 mHz
B) 1 kHz
D) 10 kHz

Question 12

If you were to measure the opposition to current flow in a circuit, you would use a(n) ____.

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

Question 13

The unit of measurement of an AC voltage measured on an oscilloscope is ____.

A) peak
C) average
B) peak to peak
D) rms

Question 14

To measure the load current flowing in a circuit, an ammeter is ____.

A) connected in parallel with the power source
B) connected in parallel with the load
C) connected in series with the load
D) connected to a de-energized circuit

Question 15

With the Volts/Div. switch set to 2 mV, a sine wave measures 6.3 blocks with a 1x probe. The rms value of this sine wave is ____.

A) 4.45 mV
C) 44.5 mV
B) 6.3 mV
D) 12.6 mV