A. equal to zero
B. in the direction of motion of blades
C. opposite to the direction of motion of blades
D. depending on the velocity
E. none of the above
Correct Answer: in the direction of motion of blades ✔
Last Updated: January 24, 2019
Related MCQs
- The air-fuel ratio in gas turbines is of the order of __________?
- Mechanical efficiency of gas turbines as compared to I.C engines is__________?
- The fuel consumption in gas turbines is accounted for by__________?
- The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is__________?
- The work ratio of a gas turbine plant is defined as the ratio of__________?
- Rotary compressors are suitable for __________?
- Gas turbine works on__________?
- Gas turbine works on__________?
- The pressure ratio of an ideal vaned compressor with increase in mass flow rate__________?
- Actual compression curve is__________?
- The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called__________?
- Surging phenomenon in centrifugal com-pressor depends on __________?
- Gas turbines for power generaion are normally used__________?
- Open cycle gas turbine works on__________?
- The work ratio of simple gas turbine cycle depends on__________?
- The vloumetric efficiency of compressor with increase in compression ratio will __________?
- Axial flow compressor resembles__________ ?
- Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm . The air pressure will be__________ ?
- Axial flow compressor has the following advantage over centrifugal compressor__________?
- Maximum delivery pressure is a rotary air compressor is of the order of__________?
- The thermodynamic efficiency of rotary compressor is based on__________?
- Surging is the phenomenon of__________?
- The maximum compression ratio in an actual single stage axial flow comperssor is of the order of__________?
- The ratio of isentropic work to euler’s work is known as __________?
- The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called__________?
- More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than__________?
- Pick up the wrong statement about advantages of multistage compression__________?
- Losses in a centrifugal compressor are due to__________?
- 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__________?
- The criterion of the thermodynamic efficiency for rotary compressor is__________?
- The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature__________?
- For minimum work in multistage compression, assuming same index of compression in all stages__________?
- Which is false statement about advantages of multistage compressor in comparison to single stage compressor__________?
- For supplying intermittent small quantity of air at high pressure, following compressor is best suited__________?
- Diffuser in a compressor is used to __________?
- Phenomenon of choking in compressor means __________?
- The ratio of isentropic work to Euler work is known as__________?
- The indicated work per unit mass of air delivered is__________?
- As the value of index ‘«’ is decreased, the volumetric efficiency will__________?
- The advantage of multistage compression over single stage compression is __________?
- In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to __________?
- The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation__________?
- During base load operation, the best method of controlling compressor is __________?
- The volumetirc efficiency of a compressor is calculated on the basis of __________?
- For slow-speed large capacity compressor, following type of valve will be best suited__________?
- The compressor efficiecny is the__________?
- For a compressor, least work will be done if the compression is__________ ?
- To avoid moisture troubles, the branch connections from compressed air lines should be taken from__________?
- To aviod moisture troubles, the compressed air main line should __________?
- The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is__________?
- The thrust on the rotor in a centrifugal compressor is produced by__________?