Engineering Thermodynamics The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion) v1/v2 (v1 + v2)/v2 (v1 + v2)/v1 v2/v1 v1/v2 (v1 + v2)/v2 (v1 + v2)/v1 v2/v1 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The condition for the reversibility of a cycle is The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process All of these The working parts of the engine must be friction free All the processes, taking place in the cycle of operation, must be extremely slow The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process All of these The working parts of the engine must be friction free All the processes, taking place in the cycle of operation, must be extremely slow ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Which of the following cycles has maximum efficiency? Brayton Rankine Stirling Carnot Brayton Rankine Stirling Carnot ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics In an ideal gas turbine plant, it is assumed that the compression and expansion processes are Isentropic Polytropic None of these Isothermal Isentropic Polytropic None of these Isothermal ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The efficiency of Diesel cycle approaches to Otto cycle efficiency when Cut-off is decreased Cut-off is zero Cut-off is constant Cut-off is increased Cut-off is decreased Cut-off is zero Cut-off is constant Cut-off is increased ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The measurement of a thermodynamic property known as temperature is based on None of these First law of thermodynamics Second law of thermodynamics Zeroth law of thermodynamics None of these First law of thermodynamics Second law of thermodynamics Zeroth law of thermodynamics ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS