1. Free air is the air at ______.
2. Standard air is the air at ______.
3. 1 m of air at atmospheric condition weighs approximately _____.
4. Adiabatic compression is one in which ____.
5. The capacity of a compressor is 5 m /mih. 5 m /min refers to ______.
6. The overall isothermal eiffciency of compressor is defined as the ratio of _____.
7. The- most efficient method of compressing air is to compress it ______.
8. Maximum work is done in compressing air when the compression is ______.
9. The pressure and temperature conditions of air at the suction of compressor are
10. Isothermal compression effeicency can be attained by running the compressor
11. The compressor capacity with decrease in suction temperature
12. Isothermal compression efficiency, even when running at high speed, can be approached by using
13. Compression efficiency is compared against
14. Aeroplanes employ following type of compressor
15. Inter cooling in compressors _______.
16. An ideal air compressor cycle without clearance on p-v diagram can be represented by following processes
17. An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes
18. What will be the volume of air at 327°C if its volume at 27°C is 1.5 m3/mt
19. The work done per unit mass of air in compression will'be least when n is equal to
20. Isothermal compression though most efficient, but is not -practicable because
21. Ratio of indicated H.P. and brake H.P. is known as _______.
22. The ratio of work doen per cycle to the swept volume in case of compressor is called
23. Cylinder clearance in a compressor should be ______.
24. Ratio of compression is the ratio of _____.
25. Clearance volume in actual reciprocating compressors is essential
26. The net work input required for compressor with increase in clearance volume
27. Ratio of indicated h.p. to shaft h.p. in known as
28. Volumetric efficiency is ______.
29. Volumetric efficiency of air compressors is of the order of
30. Volumetric efficiency of a compressor with clearance vloume
31. Volumetric efficiency of a compressor without clearance volume
32. The clearance volume of the air compressor is kept minimum because
33. Euler's equation is applicable for _____.
34. Out of the following, from where you will prefer to take intake for air compressor
35. Mining industry usually employs following motive power
36. Which is false statement about air receivers
37. An air receiver is to be placed outside. Should it be placed in
38. Which is false statement about multistage compression
39. In multistage compressor, the isothermal compression is achieved by
40. Reciprocating air compressor is best suited for
41. Rotary compressor is best suited for
42. The capacity of compressor will be highest when its intake temperature is
43. After-cooler is used to
44. To aviod moisture troubles, the compressed air main line should
45. Separators in compressor installations are located
46. The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is
47. An air compressor may be controlled by
48. The compressor efficiecny is the
49. To avoid moisture troubles, the branch connections from compressed air lines should be taken from
50. The thrust on the rotor in a centrifugal compressor is produced by
51. The compressor performance at higher altitude compared to sea level will be
52. A compressor at high altitude will draw
53. During peak load periods, the best method of controlling compressors is
54. A centrifugal compressor works on the principle of
55. For a compressor, least work will be done if the compression is
56. In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to
57. The volumetirc efficiency of a compressor is calculated on the basis of
58. The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation
59. For slow-speed large capacity compressor, following type of valve will be best suited
60. During base load operation, the best method of controlling compressor is
61. More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than
62. The advantage of multistage compression over single stage compression is
63. Pick up the wrong statement about advantages of multistage compression
64. As the value of index '«' is decreased, the volumetric efficiency will
65. The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called
66. Losses in a centrifugal compressor are due to
67. The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature
68. The indicated work per unit mass of air delivered is
69. For actual single stage centrifugal compressor, the maximum pressure ratio is of the order of
70. Which is false statement about advantages of multistage compressor in comparison to single stage compressor
71. The ratio of isentropic work to Euler work is known as
72. The criterion of the thermodynamic efficiency for rotary compressor is
73. For supplying intermittent small quantity of air at high pressure, following compressor is best suited
74. For minimum work in multistage compression, assuming same index of compression in all stages
75. For a two stage compressor* if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
76. Diffuser in a compressor is used to
77. The ratio of isentropic work to euler's work is known as
78. The thermodynamic efficiency of rotary compressor is based on
79. Phenomenon of choking in compressor means
80. The maximum compression ratio in an actual single stage axial flow comperssor is of the order of
81. Maximum delivery pressure is a rotary air compressor is of the order of
82. Surging is the phenomenon of
83. Pick up wrong statement.Surging phenomenon in centrifugal com-pressor depends on
84. The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called
85. Axial flow compressor resembles
86. Axial flow compressor has the following advantage over centrifugal compressor
87. Actual compression curve is
88. Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm . The air pressure will be
89. The pressure ratio of an ideal vaned compressor with increase in mass flow rate
90. Rotary compressors are suitable for
91. The vloumetric efficiency of compressor with increase in compression ratio will
92. Stalling of blades in axial flow compressor is the phenomenon of
93. Pick up the wrong statement
94. The work ratio of a gas turbine plant is defined as the ratio of
95. Gas turbine works on _____.
96. The work ratio of simple gas turbine cycle depends on ____.
97. The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is _____.
98. Open cycle gas turbine works on _____.
99. The fuel consumption in gas turbines is accounted for by _____.
100. Gas turbines for power generaion are normally used _____.
2. Standard air is the air at ______.
3. 1 m of air at atmospheric condition weighs approximately _____.
4. Adiabatic compression is one in which ____.
5. The capacity of a compressor is 5 m /mih. 5 m /min refers to ______.
6. The overall isothermal eiffciency of compressor is defined as the ratio of _____.
7. The- most efficient method of compressing air is to compress it ______.
8. Maximum work is done in compressing air when the compression is ______.
9. The pressure and temperature conditions of air at the suction of compressor are
10. Isothermal compression effeicency can be attained by running the compressor
11. The compressor capacity with decrease in suction temperature
12. Isothermal compression efficiency, even when running at high speed, can be approached by using
13. Compression efficiency is compared against
14. Aeroplanes employ following type of compressor
15. Inter cooling in compressors _______.
16. An ideal air compressor cycle without clearance on p-v diagram can be represented by following processes
17. An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes
18. What will be the volume of air at 327°C if its volume at 27°C is 1.5 m3/mt
19. The work done per unit mass of air in compression will'be least when n is equal to
20. Isothermal compression though most efficient, but is not -practicable because
21. Ratio of indicated H.P. and brake H.P. is known as _______.
22. The ratio of work doen per cycle to the swept volume in case of compressor is called
23. Cylinder clearance in a compressor should be ______.
24. Ratio of compression is the ratio of _____.
25. Clearance volume in actual reciprocating compressors is essential
26. The net work input required for compressor with increase in clearance volume
27. Ratio of indicated h.p. to shaft h.p. in known as
28. Volumetric efficiency is ______.
29. Volumetric efficiency of air compressors is of the order of
30. Volumetric efficiency of a compressor with clearance vloume
31. Volumetric efficiency of a compressor without clearance volume
32. The clearance volume of the air compressor is kept minimum because
33. Euler's equation is applicable for _____.
34. Out of the following, from where you will prefer to take intake for air compressor
35. Mining industry usually employs following motive power
36. Which is false statement about air receivers
37. An air receiver is to be placed outside. Should it be placed in
38. Which is false statement about multistage compression
39. In multistage compressor, the isothermal compression is achieved by
40. Reciprocating air compressor is best suited for
41. Rotary compressor is best suited for
42. The capacity of compressor will be highest when its intake temperature is
43. After-cooler is used to
44. To aviod moisture troubles, the compressed air main line should
45. Separators in compressor installations are located
46. The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is
47. An air compressor may be controlled by
48. The compressor efficiecny is the
49. To avoid moisture troubles, the branch connections from compressed air lines should be taken from
50. The thrust on the rotor in a centrifugal compressor is produced by
51. The compressor performance at higher altitude compared to sea level will be
52. A compressor at high altitude will draw
53. During peak load periods, the best method of controlling compressors is
54. A centrifugal compressor works on the principle of
55. For a compressor, least work will be done if the compression is
56. In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to
57. The volumetirc efficiency of a compressor is calculated on the basis of
58. The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation
59. For slow-speed large capacity compressor, following type of valve will be best suited
60. During base load operation, the best method of controlling compressor is
61. More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than
62. The advantage of multistage compression over single stage compression is
63. Pick up the wrong statement about advantages of multistage compression
64. As the value of index '«' is decreased, the volumetric efficiency will
65. The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called
66. Losses in a centrifugal compressor are due to
67. The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature
68. The indicated work per unit mass of air delivered is
69. For actual single stage centrifugal compressor, the maximum pressure ratio is of the order of
70. Which is false statement about advantages of multistage compressor in comparison to single stage compressor
71. The ratio of isentropic work to Euler work is known as
72. The criterion of the thermodynamic efficiency for rotary compressor is
73. For supplying intermittent small quantity of air at high pressure, following compressor is best suited
74. For minimum work in multistage compression, assuming same index of compression in all stages
75. For a two stage compressor* if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
76. Diffuser in a compressor is used to
77. The ratio of isentropic work to euler's work is known as
78. The thermodynamic efficiency of rotary compressor is based on
79. Phenomenon of choking in compressor means
80. The maximum compression ratio in an actual single stage axial flow comperssor is of the order of
81. Maximum delivery pressure is a rotary air compressor is of the order of
82. Surging is the phenomenon of
83. Pick up wrong statement.Surging phenomenon in centrifugal com-pressor depends on
84. The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called
85. Axial flow compressor resembles
86. Axial flow compressor has the following advantage over centrifugal compressor
87. Actual compression curve is
88. Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm . The air pressure will be
89. The pressure ratio of an ideal vaned compressor with increase in mass flow rate
90. Rotary compressors are suitable for
91. The vloumetric efficiency of compressor with increase in compression ratio will
92. Stalling of blades in axial flow compressor is the phenomenon of
93. Pick up the wrong statement
94. The work ratio of a gas turbine plant is defined as the ratio of
95. Gas turbine works on _____.
96. The work ratio of simple gas turbine cycle depends on ____.
97. The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is _____.
98. Open cycle gas turbine works on _____.
99. The fuel consumption in gas turbines is accounted for by _____.
100. Gas turbines for power generaion are normally used _____.
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