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Engineering Thermodynamics

Engineering Thermodynamics
The atomic mass of nitrogen is __________ oxygen.

More than
Equal to
Less than
None of these

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Engineering Thermodynamics
The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant volume, cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature, and R = Gas constant)

mcp (T2 + T1)
mcv (T2 - T1)
mR (T2 - T1)
mcp (T2 - T1)

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Engineering Thermodynamics
A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is

Not possible
Cost will be very high
May be possible with lot of sophistications
Theoretically possible

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Engineering Thermodynamics
The process is adiabatic, if the value of n in the equation pvn = C, is

∝
One
Zero
γ

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Engineering Thermodynamics
For the same compression ratio, the efficiency of dual combustion cycle is

Less than Diesel cycle and greater than Otto cycle
Greater than Diesel cycle and less than Otto cycle
Greater than Diesel cycle
Less than Diesel cycle

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Engineering Thermodynamics
The compression ratio is the ratio of

Swept volume to clearance volume
Total volume to clearance volume
Total volume to swept volume
Swept volume to total volume

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