38.

88,

40.

41.

42.

43,

Suggest the device commonly preferred for supercharging 1.C. engines
(A) piston compressor (ए) roots blowers
(C) axial flow compressor (D) sliding vane type compressor

Critical pressure for steam is

(A) 185.85 keflom? രു 212.56 kgflem?
(C) 225.65 kgflom? (D) 245.55 kgflem?
Vapouris a

(ಹ) pure substance

(B) நண gas

(C) mixed phase of liquid and gas

(D) substance homogeneous and invariable in chemical composition

‘Which of the following statements 18 not true with respect to Mollier-diagram?
(ಯ) The inclination of constant pressure lines equals the absolute temperature
(8) The constant pressure lines bend slightly downward in the super heated region

(C) The expansion process through a turbine is represented by a vertical line parallel
to the ordinate

(D) The diagram helps to readily find out the total heat content of a steam of specified
pressure and quality

‎solid changes directly to the gaseous form without ever being a liquid.‏ ہ٭ ‏ سے9ةً سے ھمضصا 0ا
‎condensation (B) evaporation‏ )4(
‎(C) sublimation (D) crystallisation‏

‎Highest useful compression ratio is the compression ratio at which the engine
(ക) gives maximum power output
(B) can operate without detonation
(€) consumes minimum fuel for a particular power output
(D) maintains operating pressures and temperatures within prescribed limits

‎Scavenging air means
(A) air sent under compression
(B) ‏عند‎ used for forcing the burnt gases out of the cylinder during the exhaust period
(0) forced air for cooling the engine cylinder
(D) burnt air containing combustion products

‎090/2016 8 A

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