The function of a distributor in an automobile is to__________________?
(A) distribute charge, equally to all the cylinders
(B) regulate power
(C) feed lub oil to all moving parts
(D) time the spark
(D) inject fuel at appropriate time
For same power and same speed, the flywheel of a four stroke engine as compared to two-stroke I.C. engine will be________________?
(A) smaller
(B) bigger
(C) same size
(D) dependent on other engine parameters
(D) unpredictable
Solid injection in I.C. engines refers to injection of________________?
(A) liquid fuel only
(B) liquid fuel and air
(C) solid fuel
(D) solid fuel and air
(D) does not exist
The m.e.p. of a petrol engine first increases as the fuel air ratio is increased and then decreases on further increase in fuel air ratio. The M.E.P is maximum in the zone of________________?
(A) lean mixture
(B) chemically correct mixture
(C) rich mixture
(D) unpredictable
(D) none of the above
The thermal efficiency of a two cycle engine as compared to four cycle engine is_________________?
(A) more
(B) less
(C) same
(D) more upto some load and then less
(D) it may be less or more depending on several other factors
Exhaust pipes of engines are covered with insulating marterial in order to_________________?
(A) keep the exhaust pipes warm
(B) reduce formation of condenstae
(C) reduce heat transfer to the engine room
(D) increase engine efficiency
(D) conserve heat
Auto-ignition reaction time for petrol engine first decreases with increase in fuel air ratio, reaches a minimum value and then increases with subsequent increase in fuel air ratio. The minimum value occurs in the region of________________?
(A) Lean mixture
(B) Chemically correct fuel air ratio
(C) Rich mixture
(D) Unpredictable
Diesel engines as compared to petrol engines require ______________________?
(A) bigger flywheel
(B) smaller flywheel
(C) same size flywheel
(D) no flywheel
(D) flywheel whose size may be less or more depending on several other fac-tors
In petrol engines, advancing the spark timing will_______________?
(A) increase the knocking tendency
(B) decrease the knocking tendency
(C) not affect the knocking tendncy
(D) increase or decrease knocking tendency depending on strenght and time of spark
(D) unpredictable
The essential equipment for producing high vlotage for sparking in petrol engines with battery is_______________?
(A) ignition coil
(B) ignition coil and distributor
(C) ignition coil and condenser
(D) ignition coil and contact breaker
(D) ignition coil, contact breaker and con-denser