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IC Engine Multiple Choice Questions | MCQs | Quiz

IC Engine Interview Questions and Answers
Pratice IC Engine questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Engine Parameters
•   Air Standard Cycles
•   Carnot Cycle
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•   Carburetors Types - 1
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•   Injection Systems - 1
•   Injection Systems - 2
•   Injection Pump
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•   Two Stroke Engines
•   S.I & C.I Engines - 1
•   S.I & C.I Engines - 2
•   Four Stroke Engines

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IC Engine Questions and Answers – Injection Systems – 1

Posted on June 18, 2017 by Manish

This set of IC Engines Multiple Choice Questions & Answers (MCQs) focuses on “Injection Systems – 1”.

1. In a fuel-injection system, the amount of fuel delivered into the air stream going to the engine is controlled by a pump which forces the fuel under pressure.
a) True
b) False
View Answer

Answer: a
Explanation: None.

2. The requirements met by the injection system are:
a) Proper atomization of fuel into very fine droplets
b) Proper spray pattern to ensure rapid mixing of fuel and air
c) Uniform distribution of fuel droplets throughout the combustion chamber
d) All of the mentioned
View Answer

Answer: d
Explanation: None.

3. In an air injection system, __________ is forced into the cylinder by means of compressed air.
a) air
b) fuel
c) water
d) none of the mentioned
View Answer

Answer: b
Explanation: In an air injection system, generally fuel is forced into the cylinder by means of compressed air.

4. Fuel injector is used for
a) Gas engines
b) CI engines
c) SI engines
d) None of the mentioned
View Answer

Answer: b
Explanation: Fuel injector is used for CI engines and not for SI engine and gas engines.

5. Advantage of air injection system is
a) cheaper fuels can be used
b) mep is high
c) fine atomization and distribution of the fuel
d) all of the mentioned
View Answer

Answer: d
Explanation: None.

6. Commonly used injection system in automobiles is
a) air injection
b) solid injection
c) combination of (a) and (b)
d) none of the mentioned
View Answer

Answer: b
Explanation: None.

7. Fuel injection pressure in solid injection system is around
a) < 10 bar
b) 10-20 bar
c) 30-50 bar
d) 200-250 bar
View Answer

Answer: d
Explanation: None.

8. Fuel filters do not use generally
a) oil
b) paper
c) cloth
d) felt
View Answer

Answer: b
Explanation: Generally paper is not used as fuel filters.

9. Fuel is injected in a four-stroke CI engine
a) at the end of suction stroke
b) at the end of expansion stroke
c) at the end of compression stroke
d) at the end of exhaust stroke
View Answer

Answer: c
Explanation: None.

10. Advantage of fuel injection in SI engine is
a) low initial cost
b) low maintenance requirements
c) increased volumetric efficiency
d) none of the mentioned
View Answer

Answer: c
Explanation: None.

11. A six cylinder, four-stroke diesel engine develops 125 kW at 3000 rpm. Its brake specific fuel consumption is 200gm/kW h. Calculate the quantity of fuel to be injected per cycle per cylinder. Specific gravity of the fuel may be taken as 0.85.
a) 0.0545 cc/cycle
b) 0.545 cc/ cycle
c) 5.45 cc/cycle
d) none of the mentioned
View Answer

Answer: a
Explanation: Fuel consumed/hour = bsfc x Power output
= 200 x 10-2 x 125 = 25 kg
Fuel consumption/cylinder = 25/6 = 4.17 kg/h
Fuel consumption/cycle = (Fuel consumption/minute)/n

where n = N/2 for four-stroke cycle engines = (4.17/60)/(3000/2)
= 4.63 x 10-5 kg
= 0.0463 gm
Volume of fuel injected = 0.0463/0.85
= 0.0545 cc/cycle.

Sanfoundry Global Education & Learning Series – IC Engine.

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

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer and 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 & Cluster Administration, Advanced C Programming, SAN Storage Technologies, SCSI Internals and Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him below:
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