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techAir
An apple loses 4.5 kJ of heat as at cools per degree Celsius drop in its temperature. What is the amount of heat lost from the apple per degree Fahrenheit in its temperature?
thermodynamics
on 28th September 2019 in
Propulsion.
4K
1
0
Worldtech
In a cyclic process the net heat supplied is 70 kJ/s. What is the work obtained from the cycle?
thermodynamics
on 29th September 2019 in
Propulsion.
741
1
0
Worldtech
A paddle wheel is used for stirring a liquid contained in a tank supplied 6000 kJ of work and during the stirring operation the tank lost 1500 kJ of heat to the surroundings. If the tank and liquid are considered as a system what will be its change in internal energy.
thermodynamics
on 29th September 2019 in
Propulsion.
755
1
0
techAir
3 kg of steam in a piston -cylinder device at 400 kPa and 175 degree Celsius undergoes a mechanically reversible , isothermal compression to a final pressure such that the steam becomes just saturated. What is the work required for the process.
thermodynamics
on 29th September 2019 in
Propulsion.
757
1
0
Kisan Kumar
What is the ratio of flight speed to the exhaust velocity for maximum propulsion efficiency ?
GATE
on 2nd October 2019 in
Propulsion.
704
1
0
Kisan Kumar
Find the fuel to air ratio.
GATE
on 8th October 2019 in
Propulsion.
741
0
0
Kisan Kumar
A turbojet powered aircraft is flying at Mach number 0.8 at an altitude of10 km. What is the thrust of the engine?
GATE
on 10th October 2019 in
Propulsion.
763
1
0
Kisan Kumar
Find the total temperatures at the exit of the air intake and the compressor respectively.
GATE
on 10th October 2019 in
Propulsion.
758
1
0
Kisan Kumar
In case of ideal triatomic gas, What is the ratio of specific heats Cp/Cv ?
on 23rd October 2019 in
Propulsion.
744
1
0
Kisan Kumar
The temperature field in a body varies according to the equation \(T(x,y)=x^{3}+4xy\). Find the direction of fastest variation in temperature at the point \((1,0)\).
mech.
thermodynamics
on 25th October 2019 in
Propulsion.
832
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0
1
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