One shot Marathon Series II Applied Thermodynamics for ESE & GATE ME Exams

Question 1

The sum of bypass factor and contact factor is____

Question 2

An SI engine, working on ideal Otto cycle, has a compression ratio of 8. If the ratio of specific heats is 1.45, then the air standard efficiency of the engine is ___________.

Question 3

When a mixture of air and water vapour is cooled at constant pressure upto saturation temperature of water vapour, the temperature attained is known as:

Question 4

An Otto cycle with compression ratio of 6 have 800 kJ/kg of heat energy supplied in constant volume heat addition process. What is work done (kJ) by burning per kg of fuel?

Question 5

A stream of 1 kg of moist air at

, specific humidity

ry air mixes with another stream of 2 kg of moist air at

, specific humidity

ry air. The specific humidity of the mixture (in g/kg of dry air) is ______________.

Question 6

In cooling coil ,air enters with temperature of 40⁰ C and leaves with temperature of 20⁰C.if the efficiency of cooling coil is 60%,then find the by pass factor

Question 7

In the compression stroke of a 4 Stroke Internal Combustion Engine________?

Question 8

Which of the following replaces the compressor of VCRS cycle in absorption refrigeration cycle?

Question 9

The cycle generally used for petrol engine is

Question 10

Refrigerant being used in VCRS system, should have _________Joule Thomson coefficient

Question 11

Which of the following statement is correct regarding regeneration in brayton cycle?

Question 12

Which of the following symptoms shows that the combustion in necessarily complete?

Question 13

In Brayton cycle compression and heat addition is similar to

Question 14

Which processes occur in the Brayton cycle __________?

Question 15

Moist air is defined as dry air plus water vapour. What is the degree of freedom of moist air?

Question 16

For a two stage reciprocating air compressor the suction pressure and the delivery pressure is 1 bar & 9 bar respectively. The intermediate pressure considering ideal intercooling is ________ bar(in integer)

Question 17

Moist air initially at DBT 18

, WBT 15

undergone some psychrometric process and got saturated with DBT of 16

. WBT at final state will be

Question 18

Find Air Fuel ratio (AFR) for complete combustion of ethyl alcohol as fuel in SI engine when air contain 21% oxygen and 79% nitrogen by volume ____________

Question 19

The specific humidity of moist air is 0.0107 kg/kg of dry air . The total atmospheric pressure is 98.75 kPa. The saturation temperature (in °C) is______.(use linear interpolation if needed)

Here P_vis partial pressure of vapour and T_sat is corresponding Saturation temperature.

Question 20

At the time of starting, idling and low speed operation, the carburetor supplies a mixture which can be termed as ____________.

Question 21

For an air standard dual cycle, if compression ratio is 10 and cutoff takes place at 8% of stroke. Find expansion ratio_____.

Question 22

Air after passing from a heating coil of temperature 45℃ is obtained at 38℃. Calculate inlet air temperature, if the bypass factor of the coil is 0.35.

Question 23

During a psychometric process, the latent heat added is

and the sensible heat added is

. Determine the Sensible heat factor:

Question 24Multiple Correct Options

Which of the following is/are the advantages of gas turbine power plants over steam turbine power plant ____________.

Question 25Multiple Correct Options

Which of following options is/are correct regarding efficiency of ideal regenerative Brayton cycle?