Exercise: Measurements And Instrumentation

Questions for: Measurements And Instrumentation

The increase in intensity of trace in a CRO causes a change in
A:
beam current
B:
frequency of time base
C:
gain of Y amplifier
D:
accelerating voltage
Answer: A
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The sensitivity of electromagnetic digital flow meter can be increased by increasing
A:
circumferential width of rotor teeth
B:
radial depth of rotor teeth
C:
thickness of rotor teeth
D:
number of teeth
Answer: D
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In portable instruments, damping is provided by
A:
spring
B:
gravity
C:
eddy current
D:
either (a) or (c)
Answer: A
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Assertion (A): When frequencies of signals fed to X and Y plates of CRO are multiples of each other, Lissajous pattern is displayed on screen.

Reason (R): In a CRO, the vertical deflection is proportional to voltage applied to Y plates.

A:
Both A and R are true and R is correct explanation of A
B:
Both A and R are true but R is not correct explanation of A
C:
A is true R is false
D:
A is false R is true
Answer: B
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For a current transformer, the standard secondary rating is
A:
1 A or 5 A
B:
2.5 A
C:
10 A
D:
5 A or 10 A
Answer: A
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