Q.1
What provides a periodic voltage waveform?
  • a) sweep generator
  • b) voltmeter
  • c) oscillator
  • d) amplifier
Q.2
Visible spot must be moved in _______
  • a) two directions
  • b) one direction
  • c) three directions
  • d) four directions
Q.3
Spot is displayed only when _______
  • a) frequencies are different
  • b) frequencies are zero
  • c) frequencies are same
  • d) voltage is high
Q.4
What is done to make the trace horizontal?
  • a) negative voltage is applied
  • b) positive voltage is applied
  • c) no voltage is applied
  • d) voltage is synchronised
Q.5
A single cycle appears on the screen when _______
  • a) sweep and signal frequencies are equal
  • b) sweep and signal frequencies are not equal
  • c) sweep and signal frequencies are zero
  • d) sweep frequency is greater than signal frequency
Q.6
Sinusoidal voltage is not observed on the screen.
  • a) True
  • b) False
Q.7
What is the flyback period?
  • a) voltage is very high
  • b) current is very low
  • c) voltage is zero
  • d) current is very high
Q.8
During trace time, voltage is decreasing with time.
  • a) True
  • b) False
Q.9
Light produced in a screen is _______
  • a) disappears immediately
  • b) does not disappear at all
  • c) is not visible to the eye
  • d) disappears slowly
0 h : 0 m : 1 s