Kerala PSC Trademan Automobile Mechanic Paper 2016

Kerala PSC Trademan Automobile Mechanic Paper 2016 | Kerala Public Service Commission Trademan Automobile Mechanic Paper 2016

During the compression stroke of a four stroke diesel engine, the piston compresesses
(a) Air fuel mixture
(b) Atomised diesel
(c) Diesel Vapour
(d) Air

The inventor of two stroke engine is
(a) Dugald Clark
(b) Rudolf diesel
(c) James Watt
(d) Nicolaus A Otto

Theroticially during expansion process in a four storke engine
(a) Inlet valve opens and exhaust valve closes
(b) Inlet valve closes and exhaust valve opens
(c) Both valve remains closed
(d) Both valves remains opened

The nominal volume of cylinder when piston is at TDC is called
(a) Storke volume
(b) Swept volume
(c) Clearence volume
(d) Suction volume

Which of the following engine can operate at higher speed?
(a) Square engine
(b) Over square engine
(c) Under square engine
(d) Steam engine

The process of flushing out the products of combustion from the engine cylinder by fresh charge is known as
(a) Turbo charging
(b) Super charging
(c) Scavenging
(d) None of the above

The injection pressure in CRDI system is upto
(a) 180 bar
(b) 1080 bar
(c) 18000 bar
(d) 1800 bar

When the piston of a two storke. Single cylinder engine move from BDC and TDC ?
(a) transfer port open and intake port closes
(b) exhaust port open and transfer port closes
(c) exhaust port and transfer port opens
(d) None of these

The number of Crankshaft for opposed piston engine is
(a) one
(b) two
(c) three
(d) four

The ratio of Brake thermal efficiency to indicated thermal efficiency is known as –
(a) Mechanical efficiency
(b) Relative efficiency
(c) Air standard efficiency
(d) Calorific value efficiency