# Measurement and Instrumentation

• ## The problem of Electrostatic coupling in a transformer is acute at_____.

• A. Low frequencies
• B. Power frequencies
• C. High frequencies
• D. High load on the transformer
Explanation:

No answer description available for this question

• ## A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads_____.

• A. 111V
• B. 90V
• C. 50V
• D. 100V
Explanation:

No answer description available for this question

• ## 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?

• A. 100W
• B. 150W
• C. 50W
• D. 200W
Explanation:

No answer description available for this question

• ## 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?

• A. 99.99 K ohms
• B. 100 K ohms
• C. 99.99 ohms
• D. 100 ohms
Explanation:

No answer description available for this question

• ## The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?

• A. 49.99 Ohms
• B. 1/49.99 ohms
• C. 1 Ohm
• D. 2 Ohms
Explanation:

No answer description available for this question

• ## In a moving coil instrument, the deflecting torque is proportional to_____.

• A. Current
• B. Square of the current
• C. Squareroot of the current
• D. Sine of the measurand
Explanation:

No answer description available for this question

• ## The thermocouple instrument will measure_____.

• A. Current
• B. Voltage
• C. Flux
• D. None of the above
Explanation:

No answer description available for this question

• ## For handling greater currents induction watt-meters are used in conjunction with_____.

• A. Potential transformers
• B. Current transformers
• C. Power transformers
• D. Either of the above
Explanation:

No answer description available for this question

• ## An oscilloscope indicates_____.

• A. Peak to peak value of voltage
• B. DC value of voltage
• C. RMS value
• D. Average value
Explanation:

No answer description available for this question

• A. 0.007mA
• B. 0.05mA
• C. 0.023mA
• D. 0.1mA