70.

71.

72,

78.

74.

76.

76.

What is the increase in energy radiated, when the surface temperature of the solid is
doubled?

(ക) 50% ൫ 200%
(©) 1600% യ) 2000%

The inlet and outlet temperatures of hot and cold fluid in a heat exchanger is 200, 170 and
40, 100 respectively. What is the capacity ratio of the heat exchanger?

@A) 0.6 ® 1.6
© 5 യ 0.8

‘Which of the following is not the inversion of a double slider crank mechanism?
(A) Scotch-yoke mechanism
(B) Whitworth quick return mechanism
(© Elliptical trammel
(D) Oldham’s coupling

The module of two numbers of 20° full depth involute profiled gears which are in mesh is 5.
What is the centre distance between the gears, if the number of teeth are 20 and 40?

@) 150 ൫ 200
© 800 D) 100

What ர்க the maximum pressure in N/m2 in a plate clutch, with inner ஊர outer radii of 60
mm and 120mm, when the axial force is 4000 N. Assume uniform wear.

@) 6 © 6
(0 0.076 0) 6

The linear velocity of a flat belt is 6 m/s. What is the power transmitted, if the tension on the
tight and slack side are 1000 N and 500 N respectively?

മ 98% ®) ‏٣۴٣‎
‎)0( 7۴۲ O 6kw

The speed of an engine changes from 400 to 420 in a cycle. What is the coefficient of
fluctuation of speed?

ക 05 (B) 0.048
© 0.058 D) 0.041

What is the stiffness of the spring for a Hartwell Governor in N/ecm having the lowest and
highest equilibrium speeds of 1000 N and 100 N respectively, if the height of the governor is
2 cm?

&) 500 ൪ 450

© 900 യ 1100

11 86/2019
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