Related Questions

If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law.
A Parabolic
B Hyperbolic
C Linear
D Logarithmic
If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows __________ law.
A Hyperbolic
B Parabolic
C Linear
D Logarithmic
Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by
A Making the volume of thermometer bulb as large as conveniently possible
B Reducing the volume of the capillary to a minimum
C Reducing the volume of the receiving element to a minimum
D All of the above
Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.
A Nozzle or rim
B Flared out
C Fluid in
D Ring plate
What is the difference between integral and derivative control?
A derivative control does not eliminate offset error
B integral control has slower response to an error signal.
C derivative control responds to a change in the rate of change in the error signal
D All of the above
E None of the above
Integral control action
A Removes offset
B May lead to oscillatory response
C Both (a) and (b)
D Neither (a) nor (b)
The steady state stability of the power system can be increased by
A Connecting lines in parallel
B Connecting lines in series
C Using machines of high impedance
D Reducing the excitation of machines
A non-linear system will have __________ steady state values.
A One
B More than one
C Two
D Three
Which of the following situations can be approximated to a steady state heat transfer system?
A A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmosheric air at 35°C
B 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless-steel pipe exposed to atmospheric air at 35°C
C Boiling brine kept in open vessel when the bottom surface temperature of the vessel is maintained constant at 180°C
D A sub-cooled refrigerant liquid at 8°C flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C
The rate of material __________ is zero in case of a steady state system.
A Accumulation
B Production
C Input
D Generation

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