A. +4000
B. -4000
C. 10000
D. -10000
Related Mcqs:
- Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas) ?
A. √T
B. 1/√P
C. √y
D. 1/√ρ - In practice, the compression ratio of compression-ignition (CI) engine ranges from ______________________?
A. 15 to 25
B. 5 to 10
C. 40 to 55
D. 60 to 70 - Multistage compression of air as compared to single stage compression offers the advantage of______________?
A. Power saving per unit weight of air delivered
B. Moisture elimination in the inter-stage cooler
C. Increased volumetric efficiency
D. All A , B. & C. - Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V – b) = RT, depends upon its___________________?
A. Pressure & temperature
B. Pressure & specific volume
C. Temperature & specific volume
D. Temperature only - What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively ?
A. 2
B. 8
C. 10
D. 40 - Regeneration of molecular sieve requires it to be heated to a temperature of about __________________ °C?
A. 80-120
B. 200-300
C. 600-800
D. 1000-1100 - Heat release during phase change is observed in case of a/an_________________?
A. Boiler
B. Condenser
C. Evaporator
D. All A. B. & C. - In case of compression of one kg of air, the work done will be the least, when the value of polytropic index ‘n’ is______________________?
A. 1
B. 1.4
C. 1.5
D. Y = Cp/Cv - Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog ?
A. Nitrogen oxides
B. Hydrocarbons
C. Both A. & B.
D. Carbon monoxide - Heat required to raise the temperature of a body by 1 °C is called its_______________?
A. Heat capacity
B. Specific heat capacity
C. Thermal conductivity
D. Water equivalent
