Related Questions

Use of I-control along with P-control facilitates
A Elimination of offset
B Reduction of offset
C Reduction of stability time
D None of these
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a
A Magnetic flowmeter
B Pitot tube
C Flow nozzle type flowmeter
D Turbine flowmeter
In counter current flow heat exchanger, the logarithmic temperature difference between the fluids is ________ as compared to parallel flow heat exchanger.
A Same
B Less
C Greater
D None of these
Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?
A The system is relatively stable
B The system is highly stable
C The system is highly oscillatory
D None of the above
The meeting came to close here the word 'close' is.
A a noun
B an adverb
C an adjective
D a verb
In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by
A Convection
B Radiation
C Conduction
D Both convection and conduction
Two fluids are flowing through two similar pipes of the same diameter. The Reynold's number is same. For the same flow rate if the viscosity of a fluid is reduced to half the value of the first fluid, the pressure drop will
A Increase
B Decrease
C Remain unchanged
D Data insufficient to predict relative pressure drop
Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
A Horizontal
B Vertical
C Inclined
D Any
For flow of fluids through packed bed, the superficial velocity is
A Less than the average velocity through channels
B More than the average velocity through channels
C Dependent on the pressure drop across the bed
D Same as the average velocity through channels
In a/an __________ , the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure.
A Rotameter
B Pitot tube
C Venturimeter
D Flow nozzle

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