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Measurement and Instrumentation

Measurement and Instrumentation
Magnetic deflection is inversely proportional to

 (Voltage)1.5.
 Voltage.
 (Voltage)2.
 (Voltage)-0.5.

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Measurement and Instrumentation
The EMF of Weston standard cell is measured using

Moving-coil meter
Digital Volt meter
Moving- iron meter
Potentiometer

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Measurement and Instrumentation
An ammeter is a

Secondary instrument
Integrating instrument
Recording instrument
Absolute instrument

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

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Measurement and Instrumentation
The quantity 1/√(∈0 × μ0) in SI units has the

 speed of light.
 dimension LT-1.
 both ‘a’ and ‘b’.
 none of these.

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Measurement and Instrumentation
The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

Standard ohm
One international ohm
One ohm according to working standards
One ohm according to SI units

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