9३. Which of the following bearing suitable for fluctuating demands ?
(ക) Needle ball bea

ing (ए) Ball bearing
(^) जलाल bearing (D) Cylindrical bearing

94 കടവ്‌ to Indian standard specifications the total number of designated grades of fundamental

tolerances arc
(ര 16 (8) 18
ഭ്ര 21 (D)

For applications involving transmission in one direction only the type of thread best suited is

(A) square thread (8) एणा

(മ 8೮800 thread (D) whitworth thread

96. A spring having stiffness s has been cut into mequal parts, each portion of the cut spring will have

A stiffness equal to
കുട (8) லா
(ര ओ (D) s/2n

97. In a thick eylinder pressurized from inside. the hoop stress is maximum
(A) at the centre of the wall thickness (8) the outer radius

(C) the inner radius (D) both at the inner and outer radius

udinal

98. ಗರ್ಗ 0 1017 0012008 subjected to internal pressure the ratio of circumftrential and long
tresses conform to the ratio

ശു 251 (B) 3:2
‏ہووت‎ (D 1:2

90, A solid shaft is to transmit 20 kW at 200 rpm. The ultimate shear stress for the steel may be

as 360 MPa and actor of safcty 85 8, The diameter of the solid shaft is
(A) 45 7 (B) 46 mm

(©) 48mm (D) 50 mm

lack sides of a belt drive is 3000 N. If the helt

100. The difference between tensions on the tight and.s
speed is 15 m/s the transmitted power in kW is

(A) 22.5 (8) 90

)© 100 (D) 4

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