Related Questions

Gross heating value of coal is __________ the net heating value.
A Higher than
B Lower than
C Same as
D None of these
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
A 1000
B 4000
C 6000
D 8000
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will
A Decrease
B Increase
C Remain constant
D None of the above
Protection by fuses is generally not used beyond
A 20 A
B 50 A
C 100 A
D 200 A
The delay fuses are used for the protection of ________ .
A motors
B power outlet circuits
C fluorescent lamps
D light circuits
H.R.C. fuses provide best protection against
A overload
B reverse current
C open-circuits
D short-circuits
Heating wet steam at constant temperature is heating it at constant
A Volume
B Pressure
C Entropy
D Enthalpy
In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating
A Decreases with increase in Rankine cycle efficiency
B Increases with increase in Rankine cycle efficiency
C Is unaffected by increase in Rankine cycle efficiency
D None of the above
In resistance heating highest working temperature is obtained from heating elements made of
A Nickel copper
B Nichrome
C Silicon carbide
D Silver
In an electric room heat convector the method of heating used is Resistance heating
A True
B False

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