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
A. Standard ohm
B. One international ohm
C. One ohm according to SI units
D. One ohm according to working standards
Answer: Option B
Related Questions on Measurement and Instrumentation
The spring material used in a spring control device should have the following property.
A. Should be nonmagnetic
B. Most be of low temperature coefficient
C. Should have low specific resistance
D. All of the above
Why is a MISC meter not recommended for DC measurement?
A. The meter is calibrated for AC and it’s error for DC would be high
B. The meter does not respond to DC signals
C. The error is high due to hysteresis effect
D. The error is high due to eddy current effect
A moving iron ammeter may be compensated for frequency errors by
A. A shunt resistance
B. A series inductance
C. Shunt capacitance
D. Series resistance
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