Mining industry usually employs following motive power___________________?

Related Mcqs:

Adiabatic compression is one in which___________________?

A. temperature during compression remains constant B. no heat leaves or enters the compressor cylinder during cornpression C. temperature rise follows a linear relationship D. work done is maximum E. entropy decreases...

Compression efficiency is compared against_____________________?

A. ideal compression B. adiabatic compression C. botii isothermal and adiabatic compression D. isentropic compression E. isothermal compression...

The volumetirc efficiency of a compressor is calculated on the basis of __________________?

A. volume of air inhaled at working conditions B. volume of air inhaled at N.T.P. conditions C. volume at 0°C and 1 kg/cm2 D. volume at 20°C and 1 kg/cm2 E. none of the above...

The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio_____________________?

A. increases B. decreases C. first increases and then decreases D. first decreases and then increases E. remains same...

The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turine and fixed higher and lower temperature) with increase in pressure ratio will___________________?

A. increase first at fast rate and then slow B. increase first at slow rate and then fast C. decrease continuously D. first increase, reach maximum and then decrease E. none of the above...