The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by Reducing value of Kc Introducing derivative control Introducing integral control None of these TRUE ANSWER : ? YOUR ANSWER : ?
Mcleoid gauge is used to measure the Pressure Flow rate Point velocity Vacuum TRUE ANSWER : ? YOUR ANSWER : ?
The transfer function of a pure dead time system with dead time τd is Eτds Τds + 1 E-τds 1/(τds + 1) TRUE ANSWER : ? YOUR ANSWER : ?
Thermocouple in a thermal well behaves as a true First order system Multiple first order system Second order system (underdamped) Second order system (overdamped) TRUE ANSWER : ? YOUR ANSWER : ?
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their Low electrical conductivity Low thermal conductivity High viscosity index Low flash point TRUE ANSWER : ? YOUR ANSWER : ?
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is 1 2 4 3 TRUE ANSWER : ? YOUR ANSWER : ?
Thermistors are used in __________ devices. Temperature compensating Both B & C Voltage measuring Temperature measuring TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following flow-metering instru-ments is an areameter? Pitot tube Hot wire anemometer Venturimeter Rotameter TRUE ANSWER : ? YOUR ANSWER : ?
Platinum resistance thermometer can be used upto antimony point which is __________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure. 630.74 1064.43 1261.93 961.93 TRUE ANSWER : ? YOUR ANSWER : ?
In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is H(1 + G) G/(1 + H) G/H H/G TRUE ANSWER : ? YOUR ANSWER : ?