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.Management Sciences
Category: Process Control and Instrumentation
The term analogous to the electrical current in a thermal system is the_________________?
0
A. Temperature difference
B. Heat flow rate
C. Heat content in the system
D. None of these
The transfer function for a P-D controller is________________?
A. Kc(1+ηD s)
B. Kc(1 +1/ηD s)
C. Kc ηD s
D. Kc/ηD s
Mcleod gauge measures the _____________ pressure?
A. Positive
B. Sub-atmospheric
C. Very high
D. Atmospheric
Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A0. The model that describes the dynamic variation of temperature of water in the tank with time is given as________________?
A. Q0(T0 – T) = Ac . h (dT/dt)
B. Q0T0 – QT = Ac . h (dT/dt)
C. Q(T0 – T) = Ac . h (dT/dt)
D. Q(T0 – T) = Ac . (dTH/dt)
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in_______________?
A. Light intensity
B. Current
C. Flux density
D. Voltage
Bode stability method uses ____________ loop transfer function?
A. Open
B. Closed
C. Either A. or B.
D. Neither A. nor B.
The transfer function of a second order system is _____________________?
A. 1/(T2s2 + 2ξTs + 1)
B. 1/(T2s2 + 2Ts + 1)
C. 1/(T2s2 + 2ξT + 1)
D. None of these
Measurement of pressure in ammonia reactor is done by __________________?
A. Bourdon gauge
B. U-tube manometer
C. Inclined tube manometer
D. Pirani gauge
In Bode plot, A.R. vs. w is plotted on a/an _____________ graph paper?
A. Log-lag
B. Triangular
C. Ordinary
D. Semi-log
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