IC Engine Questions and Answers – Rating of Fuels

«
»

This set of IC Engines Multiple Choice Questions & Answers (MCQs) focuses on “Rating Of Fuels”.

1. For best results of efficient combustion, high speed diesel engines need an approximate cetane number of
a) 100
b) 10
c) 50
d) 5
View Answer

Answer: c
Explanation: None.
advertisement

2. Calorific value of diesel oil is of the order of
a) 3000 kcal/kg
b) 5000 kcal/kg
c) 7500 kcal/kg
d) 10000 kcal/kg
View Answer

Answer: d
Explanation: None.

3. Carbon residue in diesel oil should not be more than
a) 1%
b) 0.5%
c) 0.1%
d) 0.01%
View Answer

Answer: c
Explanation: None.

4. The most popular firing order in case of four cylinder in-line I.C. engine is
a) 1-2-3-4
b) 1-3-2-4
c) 1-4-2-3
d) 1-3-4-2
View Answer

Answer: d
Explanation: None.

5. The compression ratio of motor cars is
a) 5
b) 7
c) 10
d) 13
View Answer

Answer: b
Explanation: None.
advertisement

6. The specific gravity of diesel oil is
a) 1
b) 0.7
c) 0.85
d) 0.5
View Answer

Answer: c
Explanation: None.

7. Freezing temperature of petrol is about
a) 0.65
b) 0.75
c) 0.85
d) 0.95
View Answer

Answer: b
Explanation: None.

8. Choose the correct statement, detonation can be controlled by
a) varying compression ratio
b) using lean mixture
c) retarding the spark timing
d) reducing the r.p.m
View Answer

Answer: c
Explanation: Detonation can be controlled by retarding the spark timing.

9. The efficiency of I.C. engines normally is of the order of
a) 15-20%
b) 20-25%
c) 25-30%
d) 30-35%
View Answer

Answer: d
Explanation: None.
advertisement

10. The firing order of a six stroke I.C. engine is
a) 1-3-6-5-2-4
b) 1-4-2-5-6-3
c) 1-6-2-5-4-3
d) 1-5-3-4-2-6
View Answer

Answer: d
Explanation: The firing order of a six stroke I.C. engine is 1-5-3-4-2-6 and firing order in case of four cylinder in-line I.C. engine is 1-3-4-2.

11. Sulphur content in diesel engine oil should not be more than
a) 10%
b) 5%
c) 1%
d) 0.1%
View Answer

Answer: c
Explanation: None.

12. The ash content in diesel oil should be not be more than
a) 1%
b) 5%
c) 0.1%
d) 0.01%
View Answer

Answer: d
Explanation: The ash content in diesel oil should be not be more than 0.01% while sulphur content in diesel engine oil should not be more than 1%.

Sanfoundry Global Education & Learning Series – IC Engine.

advertisement

To practice all areas of IC Engine, here is complete set of 1000+ Multiple Choice Questions and Answers.

advertisement
advertisement
advertisement
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn