Q. Which one of the following symptoms will not show that combustion is becessary complete.
✅ Correct Answer: (D)
Presence of nitrogen in exhaust
Heat Engines MCQs | Page - 2
Dear candidates you will find MCQ questions of Heat Engines here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. Presence of impurities in ice
✅ Correct Answer: (B)
Lowers melting point
Q. Piston rod is provided in
✅ Correct Answer: (B)
Double acting steam engines
Q. The pressure of steam generated in a boiler as recorded by the Bourdon pressure gauge was 2.2 kg/sq-cm. If the barometer reads 774 mm of mercury the absolute pressure of steam would be
✅ Correct Answer: (D)
3.2526 kg/sq-cm
Q. Which statement is false in case of SI engines
✅ Correct Answer: (A)
Accetylene has least tendency to knocking
Q. In a petrol engine as the speed increases
✅ Correct Answer: (D)
The spark has to be retarded
Q. In thermodynamics, forced processes are those
✅ Correct Answer: (D)
Which require an agency outside the system to force the process
Q. Which of the following is false statement? The cause of slow cranking of a gas engine during starting may be
✅ Correct Answer: (C)
High air temperature
Q. The work done on a compressor will be least when air is taken from
✅ Correct Answer: (B)
Source of low temperature air
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