Q.1

A test equipment item that has the ability to produce either square, triangular, or sawtooth waveforms is called:

  • a function generator
  • a radio frequency generator
  • an audio frequency generator
  • a frequency meter or counter
Q.2

The phase difference between sine waves of different frequencies is:

  • equal to their frequency differences
  • the difference in their fixed time displacement
  • the same throughout time
  • constantly changing
Q.3

What is the rms voltage value of an ac signal whose peak oscilloscope display uses 3 major divisions above the zero setting? (V/cm = 5)

  • 5.3 V
  • 10.6 V
  • 15.0 V
  • 21.2 V
Q.4

What is the waveform period difference between the 60 Hz electricity used in this country and the 50 Hz used in Europe?

  • 3 ms
  • 16 ms
  • 4 ms
  • 20 ms
Q.5

If a voltmeter measures a sine wave as 500 mV, what would be its average value?

  • 159.0 mV
  • 318.5 mV
  • 353.5 mV
  • 451.0 mV
Q.6

What is the period of a 16 MHz sine wave?

  • 196 ns
  • 62.5 ns
  • 31.25 ns
  • 19.9 ns
Q.7

The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's:

  • amplitude
  • frequency
  • wavelength
  • period
Q.8

What is the name of a device used to directly measure the frequency of a periodic wave?

  • oscilloscope
  • frequency meter or counter
  • audio frequency generator
  • radio frequency generator
Q.9

What does the CRT oscilloscope display?

  • voltage and period
  • current and frequency
  • rms voltage and current
  • frequency and voltage
Q.10

If a sine wave signal is 100 mV peak-to-peak, how many volts would be measured by a voltmeter?

  • 14.14 mV
  • 35.4 mV
  • 63.7 mV
  • 70.7 mV
Q.11

What is the peak-to-peak current value when an ammeter measures a 20 mA value?

  • 14 mA
  • 28 mA
  • 40 mA
  • 57 mA
Q.12

How long would it take to transmit an electromagnetic wave to a receiving antenna 1,000 miles away?

  • 5.38 ms
  • 10.8 ms
  • 53.8 ms
  • 108 ms
Q.13

Test equipment selection enables the technician to both generate signals and:

  • change circuit conditions
  • inject signals
  • sense circuit conditions
  • change signal frequencies
Q.14

Why is ac current transfer more effective than dc current transfer over long distances?

  • due to the height of power lines
  • due to the use of ac generators
  • due to step-up and step-down transformers reducing I2R losses
  • due to very high voltages
Q.15

DC current flows in one direction, while ac current rises from zero to a maximum, then falls to zero in one direction, then rises to a maximum, then falls to zero in the opposite direction.

  • True
  • False
Q.16

The letter in the Greek alphabet used to represent wavelength is __________.

  • lambda
  • theta
  • omega
  • delta
Q.17

One adjustable knob on the oscilloscope that allows the trace to be aligned with a reference graticule is called the:

  • position control
  • focus control
  • intensity control
  • volts/cm control
Q.18

One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a signal amplitude value is called the:

  • time/cm control
  • position control
  • intensity control
  • volts/cm control
Q.19

If current varies periodically from zero to a maximum, back to zero, and then repeats, the signal is:

  • direct
  • alternating
  • pulsating
  • repetitive
Q.20

Which control should be moved to display more cycles of a signal on an oscilloscope?

  • horizontal position to left or right
  • volts/cm to a smaller number
  • vertical position to top or bottom
  • time/cm to a higher setting
0 h : 0 m : 1 s