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.Management Sciences
Category: I.C. Engines
With increase in speed of vehicle, the back pressure will________________?
A. decrease
B. increase
C. remain unalfected
D. depend on other factors
E. none of the above
For the same power developed in I.C. engines, the cheaper system is_____________?
A. naturally aspirated
B. supercharged
C. centrifugal pump
D. turbo charger
E. none of the above
The termal efficiency of a petrol engine at design load is around_________________?
A. 90%
B. 50%
C. 40%
D. 30%
E. 15%.
The knock in diesel engine occurs due to____________________?
A. instantaneous and rapid burning of the first part of the charge
B. instantaneous atuo iginition of last part of charge
C. delayed burning of the first part of the charge
D. reduction of delay period
E. all ot the above
Hot air standard diesel cycle efficiency with increase in value of C„_______________?
A. increases
B. decreases
C. remains unaffected
D. depends on other factors
E. unpredictable
The magneto in an automobile is basically__________________?
C. transformer
B. d.c. generator
C. capacitor
D. magnetic circuit
E. a.c. generator
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
E. inject fuel at appropriate time
In a diesel engine, injection pressure developed by injector is of the order of______________?
A. 10 kg/cm2
B. 100 kg/cm2
C. 500 kg/cm2
D. 1400 kg/cm2
Polymerisation is a chemical process in which molecules of a compound become________________?
A. larger
B. slowed down
C. smaller
D. liquid
E. gaseous
The air-fuel ratio in petrol engines-is controlled by__________________?
A. controlling valve opening/closing
B. governing
C. injection
D. carburettion
E. scavenging and supercharging
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