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Thermodynamics
Tough Thermodynamics
Quiz 1
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Q.1
The thermal efficiency of the cycle is
a) Q2 / Wnet
b) Wnet / Q2
c) Wnet / Q1
d) Q1 / Wnet
Q.2
Which of the following losses occur in a cycle?
a) piping losses
b) pump losses
c) turbine losses
d) all of the mentioned
Q.3
The important piping losses include
a) pressure drop due to friction
b) heat loss to surroundings
c) both of the mentioned
d) none of the mentioned
Q.4
The heat transfer and the pressure drop reduces the availability of steam.
a) true
b) false
Q.5
The losses in boiler include
a) pressure drop from pump to boiler
b) pressure drop in boiler
c) both of the mentioned
d) none of the mentioned
Q.6
The main losses in turbine include
a) heat loss to surroundings
b) friction losses
c) both of the mentioned
d) none of the mentioned
Q.7
Heat loss from turbine is generally neglected.
a) true
b) false
Q.8
The losses in pump is due to
a) heat loss to surroundings
b) irreversibilities associated with fluid friction
c) both of the mentioned
d) none of the mentioned
Q.9
The losses in condenser are ____
a) small
b) large
c) always constant
d) none of the mentioned
Q.10
The condenser losses include
a) loss of pressure
b) cooling of condensate below saturation temperature
c) both of the mentioned
d) none of the mentioned
Q.11
The efficiency of Carnot cycle is ____ the efficiency of Rankine cycle.
a) less than
b) greater than
c) equal to
d) none of the mentioned
Q.12
The only process which is different in Carnot and Rankine cycle is
a) compression in pump
b) expansion in turbine
c) heat rejection process
d) heat addition process
Q.13
The Carnot cycle cannot be realized in practice.
a) true
b) false
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