Engineering :: Mechanical Measurements
181.
Ceremets are
A.
resistance elements
B.
veriable capacitances
C.
variable inductances
D.
None of the above
Answer: Option A
Explanation:
182.
LVDT converts
A.
linear displacement into electrical signal
B.
pressure into electrical output
C.
strain into electrical output
D.
None of the above
Answer: Option A
Explanation:
183.
The main advantage of a CRO is
A.
it is a voltage sensitive instrument
B.
an inertialess beam of electrons acting as a pointer
C.
a fluorescent screen acts as scale
D.
None of the above
Answer: Option B
Explanation:
184.
In a CRO, ouput from which type of oscillator is applied to the horizontal deflection plate
A.
square wave oscillator
B.
sinusoidal wave oscillator
C.
sawtooth wave oscillator
D.
None of the above
Answer: Option C
Explanation:
185.
Main advantage of electrical measuring system over mechanical system is
A.
mass inertia effects are negligiole
B.
minimum effects of friction
C.
remote indication is possoble
D.
None of the above
Answer: Option B
Explanation:
186.
A steel scale is slightly shorter when compared with a standard scale. This type of error is known as
A.
natural error
B.
systematic error
C.
instrumental error
D.
None of the above
Answer: Option C
Explanation:
187.
Which of the following material has minimum gage factor
A.
Monel
B.
Manganin
C.
Constantan
D.
None of the above
Answer: Option B
Explanation:
188.
Under the conditions when the depth of water is too much, to make a continuous record of the depth of water below a boat or ship, the instrument generally used is
A.
sound box
B.
fathometer
C.
d B meter
D.
None of the above
Answer: Option B
Explanation:
189.
The degree of perfection used in instruments, techniques are observations is known as
A.
Accuracy
B.
Precision
C.
Least Count
D.
None of the above
Answer: Option B
Explanation:
190.
The maximum allowable limit that a measurement may vary from the true value is known as
A.
expected error
B.
permissible error
C.
Range of error
D.
None of the above
Answer: Option B
Explanation:
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