Steam enters a counterflow heat exchanger operating at steady state at 0.04 mpa with a quality of 0.9 and exits at the same pressure as saturated liquid. the steam mass flow rate is 1.6 kg/min. a separate stream of air with a mass flow rate of 100 kg/min enters at 30°c and exits at 60°c. the ideal gas model with cp = 1.005 kj/kg·k can be assumed for air. kinetic and potential energy effects are negligible. determine the temperature of the entering steam, in °c. for the overall heat exchanger as the control volume, what is the rate of heat transfer, in kw.

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

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the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

understeer generally occurs when the front tyres start slipping while you go around the curve.

explanation:

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