41.

42.

43.

44.

45.

46.

47.

48,

49.

Which of the following is not an effect of providing cooling fins around engine cylinder?
(ಹಿ) Increase heat transfer area (B) Decrease heat transfer rate
)0 Increase cooling efficiency (D) None of the above

The boiling point of water at normal atmospheric pressure is -

८4) . 7 By 273K
(¢) 100 छा (0) 100°K
Mast of the coolant pumps used in automaobiles are of :
(ಯ Gear type (B) Vane type
(0) Reciprocating type { () Tmpeller type

The commonly used firing order for six cylinder in line engine is :
(५) 1-5-3-6-2-4 (९) 1-4-3-6-5-2
© 1-6-3-2-5-4 M) 1-5-2-6-35-4

What material is plating on bore of alluminium alloy cylinder blocks to obtain a wear
resistant surface?

(ക Chromium (B) Sulpher
(C) Silicon (D) Alumina
What is the advantage of alluminium alloy piston over cast iron piston of same size?
(ಹ) higher brittleness (B) less thermal conductivity
(0 1ബ in weight (D) all of the above

What is the purpose of providing vertical slot or T-slots छा piston?
(5) for the seating of compression ring
(B) for the seating of il ring
(C) णि lubrication
(0) restrict the change in diameter during thermal expansion

The volume of cylinder when piston at TDC is called :
(A) swept volume (B) clearence volume
(6) engine displacement (D) डप clearence

The nuts and bolts are usually made of :
(4५) ೧೧೨11೧೧೧ (18) ೫100 80061
(0 chromium steel (D) none of the above

230/2015 - 8 A