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Measurement and Instrumentation

Measurement and Instrumentation
The errors introduced by an instrument fall in which category ?

 Systematic errors
 Random errors
 Environmental errors
 Gross errors

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Measurement and Instrumentation
Ryall crest voltmeter is used for measurement of

High DC voltage
Low frequency voltage
AC voltage of any form
High AC voltage

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Measurement and Instrumentation
The errors mainly caused by human mistakes are

 systematic error.
 observational error.
  gross error.
 instrumental error.

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Measurement and Instrumentation
Which of the quantity consists of unit as Pascal ?

 Pressure
 Force
 Impulse
 Temperature

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Measurement and Instrumentation
The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when

 R1 = 2R2.
 R1 = 3R2.
 R1 = R2.
 R1 = R2/2.

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Measurement and Instrumentation
The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used?

100 ohms
100 K ohms
99.99 K ohms
99.99 ohms

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