CRO Measurements

Electrical 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?
a) by adjusting the voltage
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

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