MENSURATION & INSTRUMENTATION MCQS SET 05

MENSURATION & INSTRUMENTATION MCQS SET 05

1)   In liquid crystal displays, the liquid crystal exhibits properties of
a. Liquid
b. Solids
c. Gases
d. Both (a) and (b)
ANSWER: Both (a) and (b)
 

2)   In light emitting diode, the available light emitting region is
a. Less than 2.5 mm
b. From 2.5 to 25 mm
c. Greater than 25 mm
d. Greater than 50 mm
ANSWER: From 2.5 to 25 mm
 

3)   Resolver works on the principal of mutual inductance variation. It is mainly used for the measurement of
a. Linear displacement
b. Non - linear displacement
c. Rotary motion
d. All of these
ANSWER: Rotary motion
 

4)   In rotary variable differential transformer, the mutual inductance between the primary and secondary coils varies
a. Linearly with the angular displacement
b. Non - linearly with the angular displacement
c. Linearly with the linear displacement
d. Non - linearly with the linear displacement
ANSWER: Linearly with the angular displacement
 

5)   LVDT which is an instrument for the measurement of displacement, works on the principal of
a. Linear inductance
b. Non - linear inductance
c. Mutual inductance
d. Linear capacitance
ANSWER: Mutual inductance
 

6)   The instruments used for the measurement of pressure is / are
a. Bellows
b. Diaphragms
c. Fiber optic pressure sensors
d. All of these
e. None of the above
ANSWER: All of these
 

7)   A capacitive pressure sensor has a typical measurement uncertainty of
a. ± 0.2%
b. ± 0.4%
c. ± 0.1%
d. ± 0.8%
ANSWER: ± 0.2%
 

8)   If the displacement is measured with strain gauge then the number of strain gauge normally required are
a. One
b. Two
c. Three
d. Four
ANSWER: Four
 

9)   If an instrument transformer is used to extend the ranges of AC instrument, then its reading will depend on
a. R
b. L
c. C
d. All of these
e. None of these
ANSWER: None of these
 

10)   The potential transformers are used to measure large voltage using
a. High range voltmeter
b. Low range voltmeter
c. High range ammeter
d. Low range ammeter
ANSWER: Low range voltmeter