The magneto in an automobile is basically__________________?
C. transformer
B. d.c. generator
C. capacitor
D. magnetic circuit
E. a.c. generator
Month: January 2019
Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows ________________?
Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows ________________?
A. using additives in the fuel
B. engine derating i.e. reducing the maxi-mum flow of fuel
C. increasing the compression ratio
D. adherence to proper fuel specification
E. avoidance of overloading
In a cycle, the spark lasts roughly for ____________________?
In a cycle, the spark lasts roughly for ____________________?
A. 1 sec
B. 0.1 sec
C. 0.01 sec
D. 0.001 sec
E. 0.0001 sec
A diesel engine as compared to petrol engine (both running ar rated load) is ____________________?
A diesel engine as compared to petrol engine (both running ar rated load) is ____________________?
A. more efficient
B. less efficient
C. equally efficient
D. unperdictable
E. other factors will decide it
Most high speed compression engines operate on ___________________?
Most high speed compression engines operate on ___________________?
A. Otto cycle
B. Diesel cycle
C. Dual cycle
D. Carnot cycle
E. Two stroke cycle
The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at __________________?
The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at __________________?
A. 1500 rpm
B. 750 rpm
C. 3000 rpm
D. any value independent of engine speed
E. none of the above
The term scavenging is generally associated with______________________?
The term scavenging is generally associated with______________________?
A. 2-stroke cycle engines
B. 4-stroke cycle engines
C. aeroplane engines
D. diesel engines
E. high efficiency engines
Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads________________?
Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads________________?
A. the friction is high
B. the friction is unpredictable
C. the small difference in cooling water temperature or in internal friction has a disproportionate effect
D. the engine is rarely operated
E. none of the above
A heat engine utilises the_________________?
A heat engine utilises the_________________?
A. calorific value of oil
B. low heat value of
C. high heat value of oil
D. mean heat value of oil
E. all of the above
The rating of a diesel engine, with increase in airintlet temperature, will ___________________?
The rating of a diesel engine, with increase in airintlet temperature, will ___________________?
A. increase linearly
B. decrease linearly
C. increase parabolically
D. decrease parabolically
E. first decrease linearly and then increase parabolically