Kerala PSC Vocational Teacher Maintenance & Repair of Automobile Paper 2016

Kerala Public Service Commission Vocational Teacher Maintenance & Repair of Automobile Paper 2016

Joule – Thomson coefficient for an ideal gas having equation Pv=RT is
(a) Unity
(b) Infinite
(c) 0.5
(d) Zero

Cycle consisting of two isothermal and two isobaric processes is
(a) Ericsson
(b) Joule
(c) Stirling
(d) Otto

Axial thrust will be negligible in case of
(a) helical gears
(b) spiral gears
(c) herringbone gears
(d) bevel gears

Coarse grained steels
(a) are very tough
(b) are less tough
(c) do not have a tendency to distort
(d) are lighter

A critical path has
(a) zero slack
(b) minimum slack
(c) maximum slack
(d) infinite slack

Energy loss due to friction in laminar flow can be calculated either using Darcy’s equation or Hagen-Poiseuille equation where friction factor is
(a) 32/Re
(b) 64/Re
(c) 16/Re
(d) None of the above

The shaft vibrations at nodes are
(a) maximum
(b) zero
(c) minimum
(d) unpredictable

In metals subjected to cold working, strain hardening effect is due to
(a) twinning mechanism
(b) fracture mechanism
(c) dislocation mechanism
(d) None of the above

Scheduling is
(a) alloting a job to a operator
(b) alloting a job to a machine
(c) fixing the time of completion of a job
(d) detailing the sequence of operation job-wise and machine wise

The impeller used in mud pumps is
(a) open type
(b) semi open type
(c) shrouded on one side only
(d) shrouded on both sides

A mechanism forms a structure when the degrees of freedom is equal to
(a) 2
(b) 1
(c) 0
(d) -1

Which of the following defect can occur due to improper design of a gating system ?
(a) shrinkage
(b) porosity
(c) mould erosion
(d) any of the above

PERT is mainly useful for
(a) large projects
(b) large and complex projects
(c) research and development projects
(d) any small or large projects

Zeroth law of thermodynamics defines
(a) internal energy
(b) enthalpy
(c) temperature
(d) pressure

In a vibrating system the damping factor is unity, then
(a) the system will have no vibration
(b) the system will be highly damped
(c) the system will be critically damped
(d) the system will be under-damped