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Electrical measurements MCQ Quiz Hub
Electrical Measurement MCQ Question Set 14
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1. The power needs of electrical transducers is ________
maximum
minimum
zero
infinite
2. Electrical transducers are _____
small and non-portable
large and non-portable
small and compact
large and portable
3. Mechanical transducers cause ___
power loss
hysteresis loss
eddy current loss
frictional loss
4. Electrical transducers are costly.
True
False
all of the above
None of the mentioned
5. Active transducers are classified into _________
4 types
2 types
6 types
8 types
6. Active transducers develops _________
mechanical parameter
electrical parameter
chemical parameter
physical parameter
7. How do passive transducers develop electrical signals?
using a transformer
using internal source
using external source
using a diode
8. Capacitive transduction involves _______
change in resistance
change in inductance
change in resistance
change in capacitance
9. In electromagnetic based transduction measurand is ______
converted into mechanical force
converted into electromotive force
converted into chemical force
converted into physical force
10. Inductive transduction involves _______
change in self inductance
change in capacitance
change in mutual inductance
change in resistance
11. Photovoltaic transduction involves _______
voltage generation heat
voltage generation through sound
voltage generation through light
voltage generation current
12. Analog transducers convert input into _______
voltage
current
digital
analog
13. Inverse transducer converts electrical into a physical quantity.
True
False
all of the above
None of the mentioned
14. Digital transducers produce analog output.
True
False
all of the above
None of the mentioned
15. Accuracy is defined as the closeness that a reading approaches with respect to a standard value.
True
False
all of the above
None of the mentioned
16. The output of a transducer must _______
be different at different environment conditions
be same at all environment conditions
be same at some environment conditions
be zero always
17. The output of a transducer must be ________
low
medium
high
zero
18. The size of a transducer must be ______
infinite
zero
large
small
19. A transducer must be _____
quick in response
slow in response
medium in response
very slow in response
20. The output of a transducer must ________
be less reliable
be highly reliable
not be reliable
be of medium reliability
21. The range of a transducer is _______
medium
narrow
large
zero
22. The transducer output is _______
exponential
unit step
non-linear
linear
23. The sensitivity of an electrical transducer is obtained by dividing the electrical output with respect to a unit change in the physical quantity.
True
False
all of the above
None of the mentioned
24. Selection of a transducer depends on the quantity being measured.
True
False
all of the above
None of the mentioned
25. A transducer must have _______
maximum loading
minimum loading
zero loading
infinite loading
26. Transducers must operate under _______
zero electromagnetic field
constant electromagnetic fields
varying electromagnetic fields
infinite electromagnetic field
27. Errors can be minimised in some transducers through ______
power compensation
voltage compensation
resistance compensation
temperature compensation
28. How can a transducer be used in the environment with vibrations?
using shock absorbers
using proper grounding
using effective voltage
using a transformer
29. How many passive transducers are there?
1
3
5
7
30. Resistance of a metallic conductor is given by _______
R = I⁄A
R = ρ⁄A
R = ρl⁄A
R = 1⁄A
31. Passive transducers are described with their primary parameters.
True
False
all of the above
None of the mentioned
32. Rotational potentiometers use ________
capacitance
self inductance
mutual inductance
resistance
33. Temperature transducers make use of _____
change in resistivity
change in length
change in area
change in capacitance
34. Potentiometric resistance transducer measures ______
linear displacement
rectangular displacement
square displacement
triangular displacement
35. Resistance potentiometer consists of ______
capacitive element
resistive element
inductive element
no elements
36. Resistance transducer has _____
medium efficiency
low efficiency
high efficiency
zero efficiency
37. What is a helipot?
inductive element
helicopter
helipad
resistive element
38. Resistance potentiometers convert mechanical displacement into _____
electrical signal
chemical signal
physical output
kinetic energy
39. Strain gauge is a _______
inductive transducer
resistive transducer
capacitive transducer
mechanical transducer
40. Strain is defined as ____
change in height per unit height
change in weight per unit weight
change in length per unit length
change in diameter per unit diameter
41. Stress is defined as _________
diameter per unit area
length per unit area
weight per unit area
force per unit area
42. Stress vs strain curve is always linear.
True
False
all of the above
None of the mentioned
43. Sensitivity is the smallest value of measurable strain.
True
False
all of the above
None of the mentioned
44. Electrical strain gauge works on the principle of ______
variation of resistance
variation of capacitance
variation of inductance
variation of area
45. The strain gauge is not bonded to the specimen.
True
False
all of the above
None of the mentioned
46. Bonding element in a strain gauge must have ____
zero insulation resistance
low insulation resistance
high insulation resistance
infinite insulation resistance
47. Dynamic strain measurements use ______
brass iron alloy
iron aluminium alloy
nickel cadmium alloy
nickel chromium alloy
48. Commonly used elements for wire strain gauges are _____
nickel and copper
nickel and gold
gold and brass
silver and aluminium
49. Cement is classified under _____
4 types
2 types
6 types
8 types
50. Proper functioning of a strain gauge depends on _____
strain
stress
bonding
length of wire
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