51,

52,

58.

54,

55.

56,

57,

58,

59,

Waiting time in production, for manpower planning purposes should be assumed ೩ :
(^) 0 (B) 10-15%
(¢) 1-1.5% D) 20-30%

In arc welding the voltage supplied is :
(^) AC. (B) D.C.
() A.C.and D.C. both (D) Something else

Rotary indexing is required for :
(^) drilling (B) milling
(C) surface grinding (D) all the above

For drilling holes in long strip use :
(^) plate jigs (B) channel jigs
(0) leafjigs (D) box and tumbling jigs

If a distribution is skewed to left the median will always be :
ക) 1688 than the mean (B) greater than the mode
(C) between the mean and mode (D) equal to the mean

General design process of CAD does not consist of use phase :
(^) synthesis (B) presentation
(C) implementation (maintenance) (D) Optimisation

The equation of motion of a laminar flow of a real fluid are known as :
(^) Euler’s equations (B) Bernoulli equation
(C) Navier — stokes equation (D) Hagen — Poisewille equation

Oil of viscosity 1.5 Pa.S and relative density 0.9 flows through a circular pipe of
diameter 5 em with a mean velocity of 1.2 m/s. The shear stress at the wall in Pa is :
(ಹ) 360 (B) 288
(2) 180 D) 144

For flow under a shrice gate where the upstream depth is 1.2 m and the depth at the
vena contracta is 0.3 m, the discharge per metre width would be nearly :
(ಯ) 0.36 m®/s ൯ 1.25 m®/s

(C) 1.45 m®/s D) 4.0 9/8

9 012/2020
[P.T.0.]