Engineering :: Automobile Engineering
|
|
|
|
|
51. |
For a four stroke engine the maximum power output is reached at an air quantity |
A. |
Deficient by 5 to 10 percent |
B. |
Deficient by 15 to 20 percent |
C. |
Deficient by 25 to 30 percent |
D. |
Surplus by 5 to 10 percent |
E. |
Surplus by 15 to 20 percent |
|
|
Answer: Option A
Explanation:
|
52. |
In a petrol engine, the gas which does not burn and passes out without transformation is |
A. |
Oxygen |
B. |
Carbondioxide |
C. |
Carbon monoxide |
D. |
Nitrogen |
E. |
Water vapour |
|
|
Answer: Option D
Explanation:
|
53. |
In a Diesel engine, during combustion the pressure may increase at a range of |
A. |
10-15 atm |
B. |
15-20 atm |
C. |
20-30 atm |
D. |
55-75 atm |
E. |
Depends on engine size and speed |
|
|
Answer: Option D
Explanation:
|
54. |
In a Diesel engine, the temperature of gases under full load may be of the order of |
A. |
100?C |
B. |
150-200?C |
C. |
200-300?C |
D. |
500-550?C |
E. |
900-1000?C |
|
|
Answer: Option D
Explanation:
|
55. |
Which one of the following does not form a part of the fuel supply system for a Diesel engine? |
A. |
Supply pump |
B. |
Filter |
C. |
Air cleaner |
D. |
Spray nozzles |
E. |
Injector |
|
|
Answer: Option C
Explanation:
|
56. |
In a Diesel engine the fuel injection pressure is usually in the range |
A. |
100 to 170 atm |
B. |
60 to 70 atm |
C. |
30 to 40 atm |
D. |
20 to 25 atm |
E. |
10 to 15 atm |
|
|
Answer: Option A
Explanation:
|
57. |
In a S.I. engine high air velocity through air hom may be of the order of |
Answer: Option E
Explanation:
|
58. |
For S.I. engine carburettor the float is usually made of |
A. |
Brass sheet |
B. |
Nylon |
C. |
Cast iron |
D. |
Either (A) or (B) |
E. |
Either (B) or (C) |
|
|
Answer: Option D
Explanation:
|
59. |
Which air cleaner is considered to be most effective in Diesel engines? |
A. |
Dry type |
B. |
Wet type |
C. |
Oil bath type |
D. |
Whirl type |
E. |
All are equally effective |
|
|
Answer: Option C
Explanation:
|
60. |
In case of oil bath type air cleaner, the oil sediments formed by the dust must be removed |
A. |
Every day |
B. |
Weekly |
C. |
Monthly |
D. |
After about 500 km |
E. |
After about 5000 km |
|
|
Answer: Option E
Explanation:
|
Read more:
|
|