Process Control & Instrumentation Mcqs for Chemical


Q.  Liquid flow rate in a small channel is best measured by a/an____________________?

a. Weir
b. Pitot tube
c. Vane meter
d. Venturimeter


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?
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MCQs:  If response of a control system is to be free of offset and oscillation, the most suitable controller is_________________?
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MCQs:  Which of the following is not classified as a thermo electric pyrometer ?
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MCQs:  Continuous measurement of specific gravity of a liquid is done by __________________?
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MCQs:  In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the _____________ variable?
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MCQs:  Flame photometry is used for the determination of compositional analysis of_______________?
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MCQs:  Photoelectric pyrometers are suitable in the temperature range of ________________ °C?
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MCQs:  Composition of natural gas is determined by the_________________?
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MCQs:  Which of the following shows maximum dip effect (indicating reverse direction of temperature change) ?
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MCQs:  Gain margin is equal to the_________________?
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MCQs:  Thermistors which have a very high temperature co-efficient of resistivity belong to the class of solid called________________?
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MCQs:  What is the Laplace transform of sin t ?
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MCQs:  Silver point temperature is ______________ °C?
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MCQs:  A first order system with unity gain and time constant η is subjected to a sinusoidal input of frequency w = 1/η. The amplitude ratio for this system is______________?
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MCQs:  Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop?
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MCQs:  Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 – 1600°C ?
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MCQs:  Pyrometry refers to the measurement of temperature_________________?
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MCQs:  Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?
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MCQs:  According to Bode stability criterion, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is_________________?
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MCQs:  Mcleod gauge measures the _____________ pressure?
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