Kerala PSC Foreman Service Workshop Paper 2015
Kerala SIDCO Foreman Service workshop Paper 2015
Maximum Marks – 100 No. of questions – 100 Duration -1 hour 15 minutes
The most preferred process for casting gas turbine blades is
(a) die moulding
(b) shell moudling
(c) investment moulding
(d) sand casting
By which one of the following methods gray cast iron is usually welded?
(a) TIG welding
(b) MIG welding
(c) Gas welding
(d) Arc welding
Submerged arc welding takes place
(a) Under water
(b) In a cloud of gas
(c) Between works surfaces
(d) Under a blanket of granular flux
Silicon is added to electrode coating as
(a) a slipping agent
(b) a slag former
(c) a de-oxidant
(d) a colouring agent
The preheating of parts to be welded and slow cooling of the welded structure will reduce
(a) Cracking and incomplete fusion
(b) Cracking and residual stress
(c) Residual stress and incomplete penetration
(d) Cracking and underfill
Automotive crankshafts are made by
(a) Casting process
(b) Welding process
(c) Machining from rolled stock
(d) Drop forging process
A imaginary circle which by pure rolling action, gives the same motion as the actual gear and is called
(a) Addendum circle
(b) pitch circle
(c) dedendum circle
(d) base circle
An engine produces 10kW brake power by working with a brake thermal efficiency of 30%. If the calorific value of fuel used is 40,000kJ/kg, then what is mass fuel consumption?
(a) 0.5 kg/hr
(b) 3.0 kg/hr
(c) 0.3 kg/hr
(d) 1.0 kg/hr
Reference fuels for knock rating of SI engine fuels would include
(a) iso-octane and Alpha methyl naphthalene
(b) normal octane and aniline
(c) iso-octane and n-hexane
(d) n-heptane and iso-octane
Morse test is used to find out
(a) indicated horse power for multi-cylinder engines
(b) Shaft horse power
(c) Mean effective pressure
(d) Temperature of exhaust gas
Leave a Reply