41.

42.

45.

47.

48.

Modulus of resilience of a material is :
(A) A measure of its elasticity
(B) An index of its compressibility
(C) A shock resisting property
(D) Property to store energy without undergoing permanent deformation

Two closed coil helical springs made from the same diameter wire are wound on 2.5 ¢
diameter core and the other on 1.26 cm diameter core. If each spring has the same number of
coils then the ratio of their spring constants will be :

(4) 6 (8) 8
(9) 4 o 1/2

Which of the following gaseous fuels does not have different higher and lower calorific
values?

(ക) Methane ` (8) Ethane
(C) Carbon monoxide (D) Hydrogen

A rectangular water tank has its length, breadth and height ratio 2 : 1 : 2. The ratio of the
hydrostatic force at bottom to any larger vertical surface is :

@ 12 ® 1

© 2 D) 4

A thin cylindrical pressure vessel has been subjected to internal pressure. The ratio of
longitudinal to hoop stress is :

(५) 0.25 : ೫) 0.8

© 1 യു 2

In deep drawing of sheets, the limiting draw ratio depends on :
(ക) Percentage of elongation of sheet metal
(B) Yield strength of sheet metal
(C) Type of press used
(D) Thickness of sheet

In which one of the following materials, the heat energy propagation due to conduction heat
transfer will be minimum :

(५) Lead (B) றை
(C) Water (D) Air
A metallic body weighs 80 N in air and 60 N in water. The relative density of the body is :
ಯ) 8 8) 6
© 4 D) 3

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