CRO Measurements

This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “CRO Measurements”.

1. By making use of a CRO _________
a) many characteristics of a signal can be measured
b) only a few characteristics of a signal can be measured
c) no characteristics of a signal can be measured
d) signal can only be displayed

2. How is the waveform adjusted?
b) through shift controls
c) by reducing the current
d) by means of a galvanometer

3. How is error in measurement reduced?
a) using r.m.s value
b) using absolute value
c) using peak to peak value
d) using a voltmeter

4. Peak to peak voltage is given by ________
a) Vp-p = number of units × (1division)
b) Vp-p = (voltsdivision)
c) Vp-p = number of units × volts
d) Vp-p = number of units × (voltsdivision)

5. The amplitude of voltage is given by which of the following relation?
a) Vm = Vp−p2
b) Vm = Vp−p4
c) Vm = 2 × Vp-p
d) Vm = 4 × Vp-p

6. The R.M.S voltage is given by which of the following relation?
a) Vrms = Vm2
b) Vrms = Vm2√
c) Vrms = Vm8
d) Vrms = Vm8√

7. CRO is voltage measuring device.
a) True
b) False

8. Period of a waveform is obtained by which of the following relation?
a) T = number of divisions occupied by 1 cycle×(time)
b) T = number of divisions occupied by 1 cycle×(1division)
c) T = number of divisions occupied by 1 cycle×(timedivision)
d) T = number of divisions occupied by 1 cycle

9. How is frequency related to time period?
a) square proportional
b) not related
c) directly proportional
d) inversely proportional