A. Low loads
B. Temperature changes
C. High loads
D. Flow rate changes
Related Mcqs:
- Process degree of freedom indicates _______________ number of controllers to be used?
A. The maximum
B. The minimum
C. Both maximum and the minimum
D. Nothing about the - Stabilising time for the controllers is the time required for the response to reach _____________ percent of its ultimate value?
A. 63.2
B. 87.5
C. 95
D. 100 - On-off controllers are normally used for________________?
A. Low loads
B. Temperature changes
C. Flow rate changes
D. None of these - Which of the following controllers has the least maximum deviation ?
A. P-controller
B. P-I controller
C. P-I-D controller
D. P-D controller - Which of the following controllers has maximum offset ?
A. P-controller
B. P-I controller
C. P-D controller
D. P-I-D controller - _______________ thermometer cannot measure sub-zero (< 0° C) temperature ?
A. Mercury in glass
B. Bimetallic
C. Vapor pressure
D. Resistance - The function of a transducer is to _______________ ?
A. Modify the input signal
B. Amplify the input signal
C. Convert the primary signal into a more useful quantity, usually an electric impulse
D. Codify/decodify the input signal - Cascade control means _______________?
A. Feed forward control
B. More than one feed-back loop
C. On-off control
D. One feed-back loop - “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 - 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
