80.

81.

32.

33.

34.

35.

36.

The stroke and hare of a four stroke Sl engine are 250 mm ஊம்‌ 200 mm respectively.
The clearance volume is 0.001 m?, If the specific heat ratio is 1.4, the air-standard cyele
efficiency of the engine is :

(५) 41.40% (B) 46.10%

(മ) 58.20% ൬) 88.80%

A Carnot cycle is having an efficiency of 0.78. If the temperature of the high temperature
reservoir is 1241 K, what is the temperature of low temperature reservoir?

(^) 00 ಯ) 008
(© 273°C D) 100K

A solid cireular shaft transmits a torque of 80 Nm. If the allowable shear stress of the
material is 150 MPa, assuming a factor വ safety of 2, the minimum allowable design
diameter in mm 18 :

(A) 12mm (B) 8mm

(C) 82mm (D) 18mm

A clutch has outer and inner diameters 10 നേ ലാ 4 cm respectively. Assuming a uniform
pressure of 2 x 108 Pa and coefficient of friction of liner material is 0.4, the torque carrying
capacity of the clutch is :

(A) 118Nm (ए) 196 Nm

(C) 562 Nm (D) 390 Nm

The most appropriate description of a Helical gear is :
(A) Axes parallel and teeth are inclined to the axis
(ए) Axes non parallel and non-intersecting
(८) Axes are perpendicular and used for large speed reduction
(D) None of the above

For Rack and Pinion :
(A) Axes non parallel and non-intersecting
(B) Axes parallel and ane of the gears has infinite radius
(0) Any of the above i
൬) None of the above

Twenty degree full depth involute profiled 21 tooth pinion and 39 tooth gear are in mesh.
If the module is 5 mm, the centre distance between the gear pair will be :

(A) 140 mm (B) 250 mm
(¢) 280 mm ८ (D) 150 mm

7 004/2016
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