Kerala PSC Vocational Teacher Maintenance and Repair of Automobiles – KVHSE Paper 2016
| Sr.No. | Questions with options |
| 1 | Joule – Thomson coefficient for an ideal gas having equation PV=RT is
(a) Unity (b) Infinite (c) 0.5 (d) Zero |
| 2 | Cycle consisting of two isothermal and two isobaric processes is
(a) Ericsson (b) Joule (c) Stirling (d) Otto |
| 3 | Axial thrust will be negligible in case of
(a) Helical gears (b) Spiral gears (c) Herringbone gears (d) Bevel gears |
| 4 | Coarse grained steels
(a) Are very tough (b) Are less tough (c) Do not have a tendency to distort (d) Are lighter |
| 5 | A critical path has
(a) Zero slack (b) Minimum slack (c) Maximum slack (d) Infinite slack |
| 6 | 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 these |
| 7 | The shaft vibrations at nodes are
(a) Maximum (b) Zero (c) Minimum (d) Unpredictable |
| 8 | 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 |
| 9 | Scheduling is
(a) Allotting a job to a operator (b) Allotting 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 |
| 10 | 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 |
| 11 | A mechanism forms a structure when the degrees of freedom is equal to
(a) 2 (b) 1 (c) 0 (d) -1 |
| 12 | 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 |
| 13 | PERT is mainly useful for
(a) Large projects (b) Large and complex projects (c) Research and development projects (d) Any small or large projects |
| 14 | Zeroth law of thermodynamics defines
(a) Internal energy (b) Enthalpy (c) Temperature (d) Pressure |
| 15 | 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 |
| 16 | In EDM, the number of discharges per minute may be as high as
(a) 3000 (b) 6000 (c) 60,000 (d) 6,00,000 |
| 17 | Work sampling is used to find
(a) Percentage occurrence of certain activity (b) Rating of a job (c) Pre-determined motion time data (d) Standard time for a repetitive operation |
| 18 | If the diameter of a centrifugal pump impeller is doubled keeping the discharge and speed constant, then the head needs to be reduced by
(a) 16 times (b) 4 times (c) 2 times (d) 8 times |
| 19 | A parabolic cam is so named because its
(a) Profile is parabolic (b) Follower displacement vs time plot a parabolic (c) Follower velocity vs time plot is parabolic (d) Follower acceleration vs time plot is parabolic |
| 20 | The tool may fail suddenly because of
(a) Crater wear (b) Flank wear (c) Both crater and flank wear (d) Spalling |
| 21 | Break- even analysis is a
(a) Short term analysis (b) Long term analysis (c) Average of short and long term analysis (d) None of the above |
| 22 | A double- slider four- bar mechanism consisting of two turning pairs and two sliding pairs, will have a degree of freedom equal to
(a) 1 (b) 2 (c) 3 (d) 4 |
| 23 | A ship is seen to enter sea from a river. Its depth of submergence will
(a) Increase (b) Decrease (c) Remains same (d) Depend on the material of the ship |
| 24 | Position feedback device on NC machine is
(a) Shaft encoder (b) Linear scales (c) Inductosyns (d) Any of the above |
| 25 | If the unit ordering cost is doubled, then the EOQ will
(a) Be halved (b) Be doubled (c) Increase by 1.414 times (d) Decrease by 1.414 times |
| Data Collected By – K. Jeyanthi | |
| Published On – 12th April 2022 | |
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