Process Control and Instrumentation

The response of two tanks of same size and resistance in series is __________________?

Byadmin March 5, 2019August 24, 2021

The response of two tanks of same size and resistance in series is __________________?

A. Under damped
B. Critically damped
C. Over damped
D. None of the above

Process Control and Instrumentation

For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?

For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?

A. Product
B. Ratio
C. Sum
D. Difference

Read More For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?
Process Control and Instrumentation

Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?

Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?

A. Filling nitrogen under pressure in the stem
B. Increasing the diameter of the tube
C. Using steel tube in place of glass tube
D. Accounting for the tube expansion

Read More Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?
Process Control and Instrumentation

Bourdon gauges are used for measuring pressure (kg/cm2) ?

Bourdon gauges are used for measuring pressure (kg/cm2) ?

A. < atmospheric
B. > 2 (gauge)
C. 10 (absolute)

Read More Bourdon gauges are used for measuring pressure (kg/cm2) ?
Process Control and Instrumentation

“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

A. Bode stability
B. Nyquist
C. Routh stability
D. None of these

Read More “A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?
Process Control and Instrumentation

Which of the following is not a mechanical pressure sensing element ?

Which of the following is not a mechanical pressure sensing element ?

A. Bellows
B. Diaphragm
C. Bourdon tube
D. U-tube

Read More Which of the following is not a mechanical pressure sensing element ?
Process Control and Instrumentation

Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is __________________?

Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is __________________?

A. Water
B. Carbon tetrachloride
C. Paraffin
D. Ethylene glycol

Read More Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is __________________?

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