
Thermal revision 2

Quiz
•
Professional Development
•
University
•
Hard
Prem Kumar
Used 1+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is NOT one of the methods to improve Rankine efficiency?
Increasing condensor pressure
Increasing Boiler pressure
Lowering condensor pressure
Super heating to higher temperature
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Fixed blade in reaction turbine does NOT
reduce pressure of steam
Just change the direction and neither increase velocity nor decrease pressure
reduce of enthalpy of steam
reduce velocity of steam
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Fixed blade in impulse turbine
Just change the direction and neither increase velocity or decrease pressure
reduce pressure of steam
increase velocity of steam
reduce of enthalpy of steam
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Reason for compounding in impulse turbine
To reduce cost
To reduce efficiency
To extract maximum of energy from steam
To save space and noise
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Reduction in steam velocity at outlet of nozzle is NOT due to
inlet velocity of steam
Friction between the steam and nozzle
Friction between the steam particles
Shock at nozzle
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Blade coefficient
ratio of outlet relative velocity to inlet relative velocity
ratio of inlet relative velocity to outlet relative velocity
ratio of outlet relative velocity to inlet absolute velocity
ratio of outlet relative velocity to inlet flow velocity
7.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
The water (density = 1000 kg/m3) is pumped from 80 kPa to 3 MPa.Isentropic efficiency = 0.85, specific work (in kJ/kg)?
2.92
3.43
2.48
0.34
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