Kerala PSC Central Workshop Foreman Paper 2016

Kerala PSC Central Workshop Foreman Paper 2016

During tensile test, the percentage of elongation is an indicative of
(a) creep
(b) hardness
(c) ductility
(d) stiffness

Which flame is used in most of the oxy-acetylene welding?
(a) oxidizing
(b) carburizing
(c) reducing
(d) neutral

Whcih gas is normally used in gas shielded arc welding ?
(a) argon
(b) hydrogen
(c) acetylene
(d) air

The sand grains suited for small and intricate casting should be
(a) fine
(b) medium
(c) coarse
(d) rounded

The best moudling for producing plastic article is
(a) green sand moulding
(b) pit moulding
(c) plaster moulding
(d) injection moulding

In bracing the commonly used flux is
(a) copper
(b) lead
(c) boraux
(d) sodium chloride

The process used to fix ceramic tool with the tool body is
(a) welding
(b) bracing
(c) soldering
(d) clamping

A mechanism that locks the lathe carriage to the lead screw for thread cutting is called
(a) dog clutch
(b) shim
(c) half nut
(d) fly cutter

Which of the following is NOT prior to the reaming operation ?
(a) drilling
(b) tapping
(c) boring
(d) counter boring

Which of the following machinery use abrasive slurry?
(a) Electric Discharge machine
(b) Electro Chemical Machine
(c) Ultrasonic Machine
(d) Spark Erosion Machine

Surface tension is a phenomenon due to
(a) cohesion
(b) adhesion
(c) cohesion and adhesion
(d) cavitation

A tube is specified by
(a) outer diameter only
(b) inner diameter only
(c) thickness and inner diameter
(d) thickness and outer diamter

Cavitation in centrifugal pump is due to
(a) high discharge pressure
(b) high discharge velocity
(c) high discharge rate
(d) low suction pressure

For pumping slurry, the most suitable pump is
(a) centrifugal pump
(b) diaphragm pump
(c) jet pump
(d) reciprocating pump

Notch is a device for measuring
(a) flow velocity through a pipeline
(b) rate of flow through a pipeline
(c) flow velocity through a small channel
(d) rate of flow through a small channel