Correct Answer:- ‏۸۸ا05‎
‎Question86:-In CI Engines, with increase in Engine Output the delay period
‘Acincreases
B:-decreases
CCofirst increases and then decreases
De-not affected
Correct Answer: Option ®
Question87::Which one of the following statements is not a limitation of supercharging 7
കനം detonation tendency in 51 engines increases
B:-Thermal stress increases
C-The heat loss due to increased turbulence increases
D:-The density of intake air increases
Correct Answer:- Option-D

‘Question8::While undergoing a Carnot cycle, the fluid receives heat at a temperature of 327° C and rejects heat at 2 temperature of 27° C. Find the theoretical efficiency of கோல்‌.
Cycle,

۸-96
B:-93.00%
c-100%
5:196
Correct Answer:- ೦೧000
Question89:-Which one of the following is incorrect about air standard engine cycles ?
‘AcThe working medium is assumed to be a perfect gas
Bs-There is no change in the mass of the working medium
‏القع‎ the processes that constitute the cycle are internally irreversible
D:-There are no heat losses from the system to the surroundings
Correct Answer: Option-C
Question90:-The purpose of Morse Test is to obtain the approximate indicated power of a
AcSingle Cylinder engine
B:-Multi-cylinder engine
೦-800 (1) and (2)
D-Neither (1) nor (2)
Correct Answer: Option ®
Question91:-Bad valves, leaking gaskets and poorlwom piston rings cause production of a low readings of
५५८८५
B:-Compression
೦-800 (1) and (2)
D-None of the above
Correct Answer: Option-C
Question92:+F ‘smoke is observed escaping from tal pipe it indicates wom piston rings and/or scored cylinder walls
AcBlue
B:-Black
೦೫
D:Red
Correct Answer:- ೦೧000
Question93::Which of the following is/are the causes of excessive fuel consumption in 51 engine ?
i. eylinder not fring
ii choke partly closed after warm-up
ili loose ೦ broken fan belt
iv. idle too rich or too Fast
ரெடி iii and ii
B:-Only iii and iv

C-Only i and iv