68. In aventilated disc brake :
(ക A duct directs air towards the caliper for cooling while the vehicle is moving
(B) Caliper is covered with cooling fins
(©) Disc contains many small holes for optimum cooling performance

(D) Disc contains radial vanes between its rubbing surfaces for optimum cooling
performance

69. The term ply rating with reference to a tyre refers to the :
(A) Actual number of plies (B) Recommended inflation pressure
(C) Rated strength (D) Aspect ratio

70. In the recirculating ball type steering gear, the balls travel between the ball nut and the :
(A) Gear rack (B) Worm wheel
(C) Steering wheel shaft (D) Worm shaft

71. The included angle in steering geometry is the sum of the :
(ಗಿ) Camber and caster (8) Caster and Steering axis inclination
(0) Camber and Steering axis inclination (D) Camber and toe-in

72, Valve overlap ie the number of degrees of camshaft rotation during which

(മ) Both valves are closed (B) Both valves are open
ര Both (A) and (B) (D) All of the above
78. 1 vehicles with tilt steering, the steering column is pivoted in :
ശ്ര Upper bracket (8) Lower bracket
(C) Tilt bracket (D) Steering yoke joint

74, The caster is called as positive when the top of the kingpin is inclined to the :
(A) Rear of the wheel (B) Front of the wheel
)© Left of the wheel (D) Right of the wheel

75. The vehicle ride will be comfortable if :
(മ) Unsprung weight is kept minimum
(B) Sprung weight is kept minimum
‏رتا‎ Vehicle weight is kept minimum
(D) All of the above

A 11 061/2016
[P.T.0