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Topic wise Paper Solution

Examination:
Que.No Question/Problem marks
Q 3 a )

State the norms of Bharat stage III and IV.

4

Examination: 2017 SUMMER
Que.No Question/Problem marks
Q 1b)(b)

Explain Morse test.

6

Q 2 b )

The following data refers to a trial conducted on 4-stroke petrol engine Air-fuel ratio (by mass)......

8

Q 3 b )

A petrol engine has a cylinder of diameter 60 mm and stroke 100 mm.......

4

Q 3 c )

Explain with neat sketch two way catalytic converter.

4

Q 4a)(a)

a) Define : i) Stroke ii) Bore

6

Q 4b)(l)

Explain how the heat balance sheet for an IC engine is prepared............

6

Q 6 a )

The following results were obtained during Morse test on 4 stroke petrol engine

4

Examination: 2017 WINTER
Que.No Question/Problem marks
Q 2 c )

The following results were obtained during Morse test on 4-stroke petrol engine....

8

Q 3 c )

State the advantages of lubricant additives (any four)....

4

Q 4a)(a)

Define the following w.r.to. I.C. engine.

4

Q 4a)(b)

Explain the term swept volume (V s ) w.r.to.

4

Q 4b)(a)

What is meant by catalytic converter ?...................

6

Q 5 c )

List out different pollutants in exhaust gases of petrol and diesel engine.....

8

Examination: 2016 SUMMER
Que.No Question/Problem marks
Q 1b)(a)

Explain in brief, how ‘Morse test’ is carried out ?

6

Q 1b)(b)

Explain with neat sketch the constructional features of ‘Three Way Catalytic Converter’.

6

Q 2 c )

Following observations were made during a trial on 4-stroke, single cylinder engine......

8

Q 4a)(b)

An engine has piston diameter 15 cm, length of stroke 40 cm and mean effective pressure 5 bar.........

4

Q 4a)(d)

Explain the term w.r.t. I.C. engine............

4

Q 4b)(a)

Name any four additives used in lubricants ? State their advantages......

6

Examination: 2016 WINTER
Que.No Question/Problem marks
Q 1b)(a)

A four cylinder engine running at 1200 rpm delivers 20 kW

6

Q 1b)(b)

Explain with neat sketch working of non dispersive infra red (NDIR) gas analyser.

6

Q 2 c )

A four stroke gas engine has a cylinder diameter of 25 cm and stroke 45 cm...

8

Q 3 a )

List any four pollutants in exhaust gases of I.C. engine with their effects.

4

Q 4a)(c)

State the norms of Bharat stage III and IV

4

Q 4b)(a)

Define – (i) Indicated power, (ii) Mechanical efficiency, (iii) BSFC

6

Q 4b)(b)

List the additives of lubricant used in S.I engine and state their advantages.

6

Examination: 2015 SUMMER
Que.No Question/Problem marks
Q 1b)(a)

What is the necessity of I.C. Engine Testing

6

Q 1b)(b)

Explain the procedure for conducting Morse test............

6

Q 2 a )

An I.C. Engine uses 6 kg of fuel having calorific value 44000 kJ/kg in one hour.....

8

Q 3 c )

Explain three way catalytic convertor...........

4

Q 4 b )

What are the effects of pollutants on environment ?

4

Q 4b)(b)

The following results were obtained during Morse test on 4-stroke petrol engine. B.P.......

6

Examination: 2015 WINTER
Que.No Question/Problem marks
Q 1b)(b)

Write any three pollutants in exhaust gasses....

6

Q 2 c )

The following observations were made during the test on an oil engine BP

8

Q 3 a )

What is catalytic convertor ? Explain two way catalytic convertor with neat sketch

4

Q 3a)(d)

Describe the method to measure indicated power of I.C. engine.

4

Q 4a)(b)

Define the following related I.C. engine

4

Q 4b)(a)

List the additives of Lubricant used in S.I. engine and state their advantages.

6

Examination: 2014 WINTER
Que.No Question/Problem marks
Q 1b)(i)

What do you mean by............

6

Q 1b)(ii)

Explain with neat sketch any one catalytic converter........

6

Q 2 c )

During a trial on 4-stroke gas engine following observations were recorded.........

8

Q 3 a )

The results of exhaust gas analysis.......

4

Q 4a)(iv)

Various efficiencies of 4-stroke petrol engine run at full throttle over..........

4

Q 4b)(l)

State the role of following lubricant additives

6

Examination: 2018 SUMMER
Que.No Question/Problem marks
Q 1b)(a)

State different methods of determining frictional power of I.C. engine and explain any one method

6

Q 1b)(b)

Explain with neat sketch working principle of any one type of catalytic converter.

6

Q 1b)(i)

Define :

4

Q 2 a )

Following observations were recorded during a trial on single cylinder four stroke oil engine

8

Q 3 c )

State effects of pollutants in exhaust gases of petrol engine.

4

Q 4a)(b)

Define : i) Mechanical efficiency ii) Volumetric efficiency related to I.C. engine.

4

Q 4a)(c)

State advantages of closed cycle gas turbine.

4

Q 4b)(b)

The following data is collected during a trial of four stroke four cylinder petrol engine.

6

Q 6 a )

State any four types of sensors used in I.C. engine.

4