
Air standard cycles / Heat transfer CO3
Quiz
•
Engineering
•
University
•
Medium
Moses Devaprasanna M
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose from the following, the assumption which is not used in air standard cycles.
All processes are irreversible
The composition of working fluid does not change during any process
The values of specific heats are constants.
Air is considered as the working fluid.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pick out the wrong statement.
Spark ignition engines are relatively light and lower in cost.
Spark ignition engines are particularly
suited for use in automobiles
In a spark-ignition engine, a mixture of fuel
and air is ignited by a spark plug
None of the above
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The ______ is the distance the piston moves between TDC and BDC.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which cycle is otherwise known as constant volume heat addition cycle?
Diesel cycle
Carnot cycle
Otto cycle
Brayton cycle
5.
MULTIPLE SELECT QUESTION
1 min • 2 pts
In Otto cycle, thermal efficiency increases as the
________ increases
Net work output
compression ratio
cut-off ratio
expansion ratio
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For the same compression ratio and ratio of specific heats, the thermal efficiency of Diesel cycle is always _______ that of Otto cycle.
greater than
lesser than
equal to
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
For a given compression ratio and ratio of specific heats, the thermal efficiency of Diesel cycle _____ with increase in cut-off ratio
does not change
decreases
increases
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