GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
21. | Which of the following fuel detonates readily ? | ||
A. | Benzene | ||
B. | Iso-octane | ||
C. | Normal heptane | ||
D. | Alcohol | ||
22. | Spark plugs in automobiles generally have a gap between | ||
A. | 0.3 to 0.7 mm | ||
B. | 0.2 to 0.8 mm | ||
C. | 0.4 to 0.9 mm | ||
D. | 0.6 to 1.8 mm | ||
23. | In a petrol engine, if diesel is used, then the engine will | ||
A. | not run | ||
B. | run more efficiently | ||
C. | run at high speed | ||
D. | explode | ||
24. | Number of working strokes per min. for a four stroke cycle engine are _____ the speed of the engine in r.p.m. | ||
A. | equal to | ||
B. | one-half | ||
C. | twice | ||
D. | four-times | ||
25. | The air standard efficiency of an I.C. engine depends on | ||
A. | fuel used | ||
B. | speed of engine | ||
C. | compression ratio | ||
D. | none of these | ||