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Measurement and Instrumentation

Measurement and Instrumentation
Which meter is suitable for the measurement of 10mV at 50MHz?

VTVM
Moving coil voltmeter
CRO
Moving iron voltmeter

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Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

50W
150W
200W
100W

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Measurement and Instrumentation
Standard resistor ia made from

Silver
Platinum
Nichrome
Manganin

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Measurement and Instrumentation
An Ohmmeter is a

None of the listed here
Dynamometer instrument
Moving coil instrument
Moving iron instrument

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Measurement and Instrumentation
The terminals across the source are ______________________________ if a current source is to be neglected.

 short circuited
  replaced by a capacitor
  replaced by a source resistance
 open circuited

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Measurement and Instrumentation
To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows

 a straight line.
 sinisoidal.
 an ellipse.
  a circle.

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