Gujarat Assistant Motor Vehicle Inspector Mechanical Paper 2016

GPSC Assistant Motor Vehicle Inspector Mechanical Paper 2016

The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of
(a) friction
(b) limiting friction
(c) repose
(d) kinematic friction

Hooke’s law holds good up to
(a) yield point
(b) limit of proportionality
(c) breaking point
(d) elastic point

Deformatin per unit length in the direction of force is known as
(a) Strain
(b) Stress
(c) Poisson’s ratio
(d) Modulus of elasticity

In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is
(a) more
(b) less
(c) same
(d) more/less depending on composition

The neutral axis of the cross-section a beam is the axis at which the bending stress is
(a) zero
(b) minimum
(c) maximum
(d) Infinity

Poise is the unit of
(a) Surface tension
(b) capillarity
(c) viscosity
(d) shear stress in fluids

Which of the following instrument can be used for measuring speed of an aeroplane?
(a) Venturimeter
(b) Orilice plate
(c) rotameter
(d) Pilot tube

Flow occurring in a pipeline when a valve is being opened is
(a) steady
(b) unsteady
(c) laminar
(d) vortex

Two pipe systems can be said to be equivalent, when the following quantities are same
(a) friction loss and flow
(b) length and diameter
(c) flow and length
(d) friction factor and diameter

Cavitation is caused by
(a) high velocity
(b) high pressure
(c) weak material
(d) low pressure