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Measurement and Instrumentation

Measurement and Instrumentation
What is the approximate input impedance of a CRO?

 100 MΩ
 10 MΩ
 1 MΩ
 0

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Measurement and Instrumentation
Relative error is same as

None of these
 absolute error.
 true error.
 ratio of absolute error and true value.

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Measurement and Instrumentation
What is the expression for acceleration?

 Mass x velocity
 Mass x acceleration
 Change in velocity / time
 Force x displacement

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Measurement and Instrumentation
A CRO can display

AC signals
Both AC and DC signals
DC signals
Time invariant signals

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Measurement and Instrumentation
The pointer of an indicating instrument should be

None of the listed here
Very light
Very heavy
Either light or heavy

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Measurement and Instrumentation
Purely mechanical instrument cannot be used for dynamic measurements because they have

 high inertia.
All of these
 higher response time.
 large time constant.

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