27.

28.

29.

30.

31.

If I, @,, @,,@,H,e and K represent the moment of inertia, maximum speed, minimum

speed, mean speed, kinetic energy at mean speed, maximum fluctuation of energy and
coefficient of fluctuation of speed of a fly wheel respectively, the maximum fluctuation of

energy in that flywheel is equal to :
(A) 2EK (B) Iw’K
(0) 7७(७, - ७५) ൯൬) Allofthe above

For maximum power transmission, the velocity of the belt is obtained as

८ ட்‌ ௫ ட்‌

m 3m

൨ 7
‏ہت‎ (0) ட்‌

Where m= Mass per unit length of belt and

T = Maximum allowable belt tension

The ratio of friction torque with uniform wear to friction torque with uniform pressure in flat
and conical pivots, is :

^ 2/3 (B) 4/3
(C) 3/4 (D) 3/2

The height of Watt governor is :
(A) Directly proportional to the speed
(B) Inversely proportional to the speed
(C) Directly proportional to the square of the speed
(D) Inversely proportional to the square of the speed

The equation of motion of a body over a smooth surface is given by the relation s = 10 t + 2¢°
where (s) is in metres and (¢) in seconds. If the mass of the body is 20 kg, find the magnitude
of force responsible for the motion :

(A) 50% (B) 60N
(0 70% (0) 80%

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