Question: Work done in case of free expansion is
[A].indeterminate
zero
negative
none of these
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Chemical Engineering
Critical temperature is defined as the temperature above which a gas will
Question: Critical temperature is defined as the temperature above which a gas will
[A].not liquify (barring exceptions).
immediately liquify.
never liquify however high the pressure may be.
none of these.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Entropy change in case of reversible adiabatic process is
Question: Entropy change in case of reversible adiabatic process is
[A].minimum
zero
maximum
indeterminate
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Work done is a
Question: Work done is a
[A].property of the system
path function
point function
state description of a system
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in
Question: In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in
[A].enhanced COP.
decreased COP.
no change in the value of COP.
increased or decreased COP ; depending upon the type of refrigerant.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v2 3 m3 ) is max imum, when the value of ‘n’ is
Question: In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v2 3 m3 ) is max imum, when the value of ‘n’ is
[A].0
1
y = 1.44
1.66
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Enthalpy of a gas depends upon its
Question: Enthalpy of a gas depends upon its
[A].temperature
mass
volume
pressure
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in
Question: Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in
[A].increased COP.
same COP.
decreased COP.
increased or decreased COP ; depending upon the type of refrigerant.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In vapour compression refrigeration system, if the evaporator temperature and the condenser temperatures are -13°C and 37°C respetively, the Carnot COP will be
Question: In vapour compression refrigeration system, if the evaporator temperature and the condenser temperatures are -13°C and 37°C respetively, the Carnot COP will be
[A].5.2
6.2
0.168
data insufficient, can’t be found out
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when
Question: In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when
[A].n = y = 1.4
n = 0
n = 1
n = 1.66
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.