- (A) inject fuel in cylinder
- (B) supply fuel when carburettor fails
- (C) pump fuel so that it reaches carburettor (to improve thermal efficiency)
- (D) does not exist
Mechanical Engineering Mcqs
- (A) higher
- (B) lower
- (C) same
- (D) depends on size of engine
- (E) unpredictable.
- (A) 0.1 to 0.2 mm
- (B) 0.2 to 0.4 mm
- (C) 0.45 to 0.6 mm
- (D) 0.6 to 0.8 mm
- (E) 0.8 to 1 mm
- (A) 0.001 sec
- (B) 0.002 see
- (C) 0.01 sec
- (D) 0.05 sec
- (E) 0.1 sec
- (A) minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
- (B) temperature at which it solidifies or congeals
- (C) that at which it catches fire without external aid
- (D) indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off
- (E) indicated by 50% distillation temperature
- (A) 30 – 65°C
- (B) 65 – 220°C
- (C) 220-350°C
- (D) 350-450°C
- (E) 450-550°C
- (A) 150°C
- (B) 240°C
- (C) 370°C
- (D) 450°C
- (E) more than 500°C.
- (A) iso-octane
- (B) mixture of normal heptane and iso-oc-tane
- (C) alpha methyl napthalene
- (D) mixture of methane and ethane
- (E) mixture of paraffins and aromatics
- (A) the time taken by fuel after injection (before top dead center) to reach upto auto-ignition temperature
- (B) time before actual fuel injection and the pump pluger starts to pump fuel
- (C) time corresponding to actual injection and top dead center
- (D) time corresponding to actual ignition and top dead center
- (E) none of the above
- (A) 1%
- (B) 0.5%
- (C) 0.1%
- (D) 0.01%
- (E) 0.001%
