Electrical measurements MCQ Quiz Hub

1. Input signal magnitude is limited by _____
button
resistance
attenuator
voltage

2. Electronic multimeter consists of a rectifier.
True
False
all of the above
None of the mentioned

3. Multimeter can be used as an ammeter by ____
connecting series resistances
making use of a transducer
making use of a transformer
connecting shunts

4. Multimeter can be used for D.C. voltage measurement by _____
connecting series resistances
connecting shunt resistances
connecting star delta resistances
using a switch

5. Multimeter can be used only for low resistance measurement.
True
False
all of the above
None of the mentioned

6. What is the role of a rectifier in a multimeter?
bias purpose
thermal stability
rectification
inversion

7. What is the initial setting made in a multimeter before it is used for measuring resistance?
fine adjustment
instrument is open circuited
voltage is applied
zero adjustment

8. Digital voltmeters converts ______
analog to digital signal
digital to analog signal
current to voltage
resistance to voltage

9. Digital voltmeters can be used to measure _____
voltage only
voltage, temperature, pressure, etc
voltage and current
voltage and resistance

10. A digital voltmeter reduces parallax error.
True
False
all of the above
None of the mentioned

11. In a DVM, a transducer converts ______
input to a proportional current
input to a proportional power
input to a proportional voltage
input to a proportional resistance

12. In a DVM, a signal conditioning circuit is used _____
to bring current to a suitable limit
to bring resistance to a suitable limit
to bring resistance to s suitable limit
to bring voltage to a suitable limit

13. Input range of DVM is _____
1 V to 1000 V
0.1 V to 10 V
0.01 V to 1 V
0.001 V to 0.1 V

14. Output in digital form can’t be used directly.
True
False
all of the above
None of the mentioned

15. What is the effect of IC chips on DVM?
increase in cost
increase in power
reduction in cost
increase in size

16. Basic range of DVM is _____
1 or 10 V
0.1 or 1 V
10 or 100 V
100 or 1000 V

17. Accuracy of a DVM is ________
low
high
medium
zero

18. Input impedance of a DVM is ______
low
zero
high
medium

19. In DVM the common mode rejection noise is eliminated by ______
increasing the signal amplitude
making use of a resistance
using a transformer
guarding

20. Output of DVM needs ______
4 lines
2 lines
8 lines
16 lines

21. Normal mode noise can be eliminated through _____
attenuation
filtering
amplification
a transformer

22. DVM has ____
1-3 digits
2-5 digits
3-6 digits
7-10 digits

23. What is a digitizing circuit?
converts digital signal to analog
boosts the magnitude of a digital signal
attenuates a digital signal
converts analog signal to digital

24. User must wait for a stable reading.
True
False
all of the above
None of the mentioned

25. A successive approximation type DVM makes use _______
of a digital divider
of an analog divider
of an oscillator
of a transducer

26. Successive approximation type DVM is based on the principle of ______
acceleration of an object
weight of an object
velocity of an object
momentum of an object

27. Which compares the output in a successive approximation type DVM?
op amp
diode
comparator
rectifier

28. D/A converter generates the set pattern successively.
True
False
all of the above
None of the mentioned

29. What is the role of logic control and sequencer in a successive approximation type DVM?
generate analog voltage
generate power
generate current through resistance
generate sequence code

30. Resolution of a successive approximation type DVM is given by which of the following relation?
R = 1⁄10n
R = 1⁄10
R =10n
R = 10

31. Sensitivity of a successive approximation type DVM is given by which of the following relation?
S = fsmin
S = fsmin × R
S = R
S = fsmin ⁄ R

32. Speed of a successive approximation type DVM can be improved by making use of ______
electrical switches
mechanical devices
solid state devices
transformers

33. Accuracy depends on external supply.
True
False
all of the above
None of the mentioned

34. Ramp type DVM uses ______
a linear ramp technique
a non-linear ramp technique
an exponential ramp technique
an asymptotic ramp technique

35. Linear ramp technique is based on _____
voltage measurement
time measurement
current measurement
resistance measurement

36. Time is measured using ______
clock
logic gates
counter
flip-flops

37. Which is the main device used in the linear ramp technique?
exponential ramp
asymptotic ramp
non-linear ramp
linear ramp

38. Resolution depends on _____
frequency
resistance
voltage
current

39. How is input voltage measured?
by using a voltmeter
by counting the pulses
by using a multimeter
by using a transformer

40. Which determines the rate of measurement cycles?
oscillator
amplifier
mutivibrator
oscilloscope

41. What is the typical value of the multivibrator?
10 cycles/second
0.2 cycles/second
50 cycles/second
5 cycles/second

42. Swing of the ramp is ______
±12 V
±10 V
±8 V
±5 V

43. In a voltage to frequency converter type integrated DVM _____
voltage is converted to time
voltage is converted to frequency
frequency is converted to voltage
frequency is converted to time

44. Input voltage is measured by _______
using a voltmeter
counting pulses
using a multimeter
using an ammeter

45. What is the main component of an integrating type DVM?
diode
amplifier
op amp
oscillator

46. When input is positive, then output is?
growing exponential signal
decaying exponential signal
positive going ramp
negative going ramp

47. What is the effect of the input signal on the output teeth?
directly proportional
inversely proportional
independent
square proportional

48. Sawtooth pulses enter into a reversible counter.
True
False
all of the above
None of the mentioned

49. Application of an input voltage generates a ________
linear signal at the output
ramp at the output
exponential signal at the output
unit step signal at the output

50. Number of pulses is related to frequency.
True
False
all of the above
None of the mentioned