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1. An engine burns 200 cubic feet per hour of natural gas with a heating value of 1000 btu/cubic feet. The engine produces 39.1 horsepower for this test. What is the average efficiency for this test?
2. At what rate (btu/h) is heat rejected from this engine as waste heat?
a plastic ring or hula-hoop is thrown to the right with a velocity of 8ms and it moves in such a way that it produces a
A piece of pipe 0.3048m long weighing 13.34N and having internal diameter of 0.05207m is slipped over a vertical shaft 0.0508m in diameter and allowed to fall. Calculate the approximate velocity attained by the pipe if a film of oil of kinematic visc..
a 2.5 m tall steel cylinder has a cross sectional area of 1.5 m2 . at the bottom with a height of 0.5 m is liquid water
A 1200 MW power plant has a thermal efficiency of 39%. Find: (a) the rate of heat addition to the cycle (b) the rate of heat rejection from the condenser [(a) 1.05 x 10^10 Btu/hr; (b) 6.4 x 10^9 Btu/hr]
A weather balloon carries a mercury barometer in order to determine altitude as a function of flight time. At a particular moment, the barometer gives a reading of 476 mm. How high (in meters) is the balloon above standard sea level? (Assume mercury ..
a refrigerator cycle has a cop of 3 and removes 100kw of heat from a building which is kept at 23c. the device rejects
the acceleration of a particle is given by a -ks2 where a is in meters per second squared k is a constant and s is in
water at 300k flows at 0.2 ms over a 3 cm-diameter cylinder maintained at 400k. determine 1 drag coeffiencient and 2
an inverted conical container 26 in in diameter and 44 in high is filled with a liquid at 20degreesc. the liquid weight
two well-insulated tanks contain air. initially tank a hold 1.0 lb of air at 1440 r and tank b has 2.0 lb of air at
to what temperature would a constrained rod of aluminium with a diameter of 50 mm need to be heated if it is expected
a counter shell and tube exchanger is used to heat water with hot exhaust gases.the water c4180 jkg cflows at a rate 2
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