1. The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft ______.
2. In a diesel engine, the fuel is ignited by ____.
3. Scavenging air in diesel engine means _____.
4. Supercharging is the process of _____.
5. Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged ?
6. The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called
7. Compression ratio of LC. engines is _____.
8. The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is _____.
9. If the intake air temperature of I.C. engine increases, its efficiency will _____.
10. All heat engines utilize _____.
11. An engine indicator is used to determine the following _____.
12. Fuel oil consumption guarantees for I .C. engine are usually based on _____.
13. If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the %age increase in efficiency will be _____.
14. In case of gas turbines, the gaseous fuel consumption guarantees are based on
15. In a typical medium speed 4-stroke cycle diesel engine the inlet valve
16. The pressure and temperature at the end of compression stroke in a petrol engine are of the order of _____.
17. The pressure at the end of compression in the case of diesel engine is of the order of
18. The maximum temperature in the I.C. engine cylinder is of the order of
19. The thermal efficiecny of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will ____.
20. Pick up the wrong statement.
21. Combustion in compression ignition engines is _____.
22. The fuel in diesel engine is normally injected at pressure of _____.
23. The specific fuel consumption per BHP hour for diesel engine is approximately
24. The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed
25. Crankcase explosion in I.C. engines usuall occurs as
26. Compression loss in I.C engines occurs duto
27. The specific fuel consumption per BH hour for a petrol engine is approximately
28. The air requirement of a petrol engin during starting compared to theoretical airequired for complete combustion is
29. The inlet value of a four stroke cycle I.C engine remains open for nearly
30. Which of the following is not an interna combustion engine _____.
31. Pick up the false statement.
32. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the _____.
33. The output of a diesel engine can be increased without increasing the engine revolution or size in following way.
34. It the temperature of intake air in IC engines is lowered, then its efficiency will _____.
35. In a typical medium speed 4-stroke cycle diesel engine ______.
36. For the same compression ratio _____.
37. The precess of breaking up or a lipuid into fine droplets by spraying is called
38. As a result of detonation in an I.C. engine, following parameter attains very high value
39. Which of the following statements is correct?
40. Most high speed compression engines operate on
41. The accunmulation of carbon in a cylinder results in increase of
42. Which of the following medium is compressed in a Diesel engine cylinder
43. The air-fuel ratio of the petrol engine is controlled by
44. In a typical medium speed, 4-stroke cycle diesel engine
45. Diesel fuel, compared to petrol is _____.
46. In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of _____.
47. When crude oil is heated, then which of the following hydrocarbon is given off first.
48. The rating of a diesel engine, with increase in air-intlet temperature, will
49. A 75 cc engine has following parameter as 75 cc _____.
50. A heat engine utilises the _____.
51. Gaseous-fuel guarantees are based on _____.
52. Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads
53. Polymerisation is a chemical process in which molecules of a compound become
54. The term scavenging is generally associated with _____.
55. In diesel engine, the compression ratio in comparison to expansion ratio is
56. The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at
57. Engine pistons 'are usually made of aluminium alloy because it
58. Most high speed compression engines operate on
59. The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is
60. A diesel engine as compared to petrol engine (both running ar rated load) is
61. The size of inlet valve of.an engine in comparison to exhaust valve is
62. In a cycle, the spark lasts roughly for
63. Which of the following is false statement :Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following
64. Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows
65. The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be
66. Pick up the wrong statement about supercharging
67. The actual volume of fresh charge admitted in 4-stroke petrol engine is
68. The magneto in an automobile is basically
69. The reason for supercharging in any engine is to
70. The operation of forcing additional air under pressure in the engine cylinder is known as
71. Supercharging is essential in _____.
72. The minimum cranking speed in case of petrol engine is about
73. In a typical medium speed 4 stroke cycle diesel engine
74. Flash point of fuel oil is ______.
75. The mean effective pressure obtained from engine indicator indicates the
76. For the same power developed in I.C. engines, the cheaper system is
77. Installation of supercharger on a four-cycle diesel engine can result in the following percentage increase in power
78. Scavenging is usually done to increase
79. Which of the following is the lightest and most volatile liquid fuel
80. The theoretically correct air fuel ratio for petrol engine is of the order of
81. Air fuel ratio for idling speed of a petrol engine is approximately
82. Air fuel ratio at which a petrol engine can not work is
83. For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of
84. The following volume of air is required for consuming 1 litre of fuel by a four stroke engine
85. Pour point of fuel oil is the _____.
86. A 5 BHP engine running at full load would consume diesel of the order of
87. Diesel engine can work on very lean air fuel ratio of the order of 30 : 1. A petrol engine can also work on such a lean ratio provided
88. A diesel engine has ______.
89. A hmh flame speed is obtained in diesel engine when air fuel ratio is
90. The knock in diesel engine occurs due to
91. The air-fuel ratio in petrol engines-is controlled by
92. Volatility of diesel fuel oil is
93. Which is more viscous lub oil
94. In the opposed piston diesel engine, the combustion chamber is located
95. A stoichiometric air-fuel ratio is
96. In a naturally aspirated diesel engine, the air is supplied by
97. In loop scavenging, the top of the piston is
98. In the crankcase method of scavenging, the air pressure is produced by_____.
2. In a diesel engine, the fuel is ignited by ____.
3. Scavenging air in diesel engine means _____.
4. Supercharging is the process of _____.
5. Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged ?
6. The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called
7. Compression ratio of LC. engines is _____.
8. The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is _____.
9. If the intake air temperature of I.C. engine increases, its efficiency will _____.
10. All heat engines utilize _____.
11. An engine indicator is used to determine the following _____.
12. Fuel oil consumption guarantees for I .C. engine are usually based on _____.
13. If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the %age increase in efficiency will be _____.
14. In case of gas turbines, the gaseous fuel consumption guarantees are based on
15. In a typical medium speed 4-stroke cycle diesel engine the inlet valve
16. The pressure and temperature at the end of compression stroke in a petrol engine are of the order of _____.
17. The pressure at the end of compression in the case of diesel engine is of the order of
18. The maximum temperature in the I.C. engine cylinder is of the order of
19. The thermal efficiecny of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will ____.
20. Pick up the wrong statement.
21. Combustion in compression ignition engines is _____.
22. The fuel in diesel engine is normally injected at pressure of _____.
23. The specific fuel consumption per BHP hour for diesel engine is approximately
24. The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed
25. Crankcase explosion in I.C. engines usuall occurs as
26. Compression loss in I.C engines occurs duto
27. The specific fuel consumption per BH hour for a petrol engine is approximately
28. The air requirement of a petrol engin during starting compared to theoretical airequired for complete combustion is
29. The inlet value of a four stroke cycle I.C engine remains open for nearly
30. Which of the following is not an interna combustion engine _____.
31. Pick up the false statement.
32. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the _____.
33. The output of a diesel engine can be increased without increasing the engine revolution or size in following way.
34. It the temperature of intake air in IC engines is lowered, then its efficiency will _____.
35. In a typical medium speed 4-stroke cycle diesel engine ______.
36. For the same compression ratio _____.
37. The precess of breaking up or a lipuid into fine droplets by spraying is called
38. As a result of detonation in an I.C. engine, following parameter attains very high value
39. Which of the following statements is correct?
40. Most high speed compression engines operate on
41. The accunmulation of carbon in a cylinder results in increase of
42. Which of the following medium is compressed in a Diesel engine cylinder
43. The air-fuel ratio of the petrol engine is controlled by
44. In a typical medium speed, 4-stroke cycle diesel engine
45. Diesel fuel, compared to petrol is _____.
46. In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of _____.
47. When crude oil is heated, then which of the following hydrocarbon is given off first.
48. The rating of a diesel engine, with increase in air-intlet temperature, will
49. A 75 cc engine has following parameter as 75 cc _____.
50. A heat engine utilises the _____.
51. Gaseous-fuel guarantees are based on _____.
52. Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads
53. Polymerisation is a chemical process in which molecules of a compound become
54. The term scavenging is generally associated with _____.
55. In diesel engine, the compression ratio in comparison to expansion ratio is
56. The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at
57. Engine pistons 'are usually made of aluminium alloy because it
58. Most high speed compression engines operate on
59. The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is
60. A diesel engine as compared to petrol engine (both running ar rated load) is
61. The size of inlet valve of.an engine in comparison to exhaust valve is
62. In a cycle, the spark lasts roughly for
63. Which of the following is false statement :Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following
64. Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows
65. The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be
66. Pick up the wrong statement about supercharging
67. The actual volume of fresh charge admitted in 4-stroke petrol engine is
68. The magneto in an automobile is basically
69. The reason for supercharging in any engine is to
70. The operation of forcing additional air under pressure in the engine cylinder is known as
71. Supercharging is essential in _____.
72. The minimum cranking speed in case of petrol engine is about
73. In a typical medium speed 4 stroke cycle diesel engine
74. Flash point of fuel oil is ______.
75. The mean effective pressure obtained from engine indicator indicates the
76. For the same power developed in I.C. engines, the cheaper system is
77. Installation of supercharger on a four-cycle diesel engine can result in the following percentage increase in power
78. Scavenging is usually done to increase
79. Which of the following is the lightest and most volatile liquid fuel
80. The theoretically correct air fuel ratio for petrol engine is of the order of
81. Air fuel ratio for idling speed of a petrol engine is approximately
82. Air fuel ratio at which a petrol engine can not work is
83. For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of
84. The following volume of air is required for consuming 1 litre of fuel by a four stroke engine
85. Pour point of fuel oil is the _____.
86. A 5 BHP engine running at full load would consume diesel of the order of
87. Diesel engine can work on very lean air fuel ratio of the order of 30 : 1. A petrol engine can also work on such a lean ratio provided
88. A diesel engine has ______.
89. A hmh flame speed is obtained in diesel engine when air fuel ratio is
90. The knock in diesel engine occurs due to
91. The air-fuel ratio in petrol engines-is controlled by
92. Volatility of diesel fuel oil is
93. Which is more viscous lub oil
94. In the opposed piston diesel engine, the combustion chamber is located
95. A stoichiometric air-fuel ratio is
96. In a naturally aspirated diesel engine, the air is supplied by
97. In loop scavenging, the top of the piston is
98. In the crankcase method of scavenging, the air pressure is produced by_____.
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