Technician A says all oils lubricate the engines the same. Technician B says that synthetic oils improve fuel mileage and performance. Who is correct?

Which of the following team members would not be involved in the design of gameplay? Graphic Designer Quality assurance tester Writer Sound Designer

The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k = 0.029 W / m K. The measured temperature difference across a 25-mm-thick sheet of the material is T1 - T2 = 12°C. a.

Which power transfer system is most suitable for the food processing industry? The Answer Is C A. hydraulic power transfer B. mechanical power transfer C. pneumatic power transfer D. electromechanical power transfer

In a reversible process both the system and surrondings can be returned to their initial states. a) - True b) - False

Pipe (2) is supported by a pin at bracket C and by tie rod (1). The structure supports a load P at pin B. Tie rod (1) has a diameter of 12 mm and an allowable normal stress of 110 MPa.

The value of the critical Reynolds number for the flow over a flat plate is 5 x10^5. The significance of the value is: (a) The boundary layer will be turbulent where the Reynolds number is less than this value.

The specifications of an electronic device are 24 / - 0.4 Amps. When the device exceeds specifications the average quality cost is $32.00. A sample of the devices had an average value of 23.9 Amps and a standard deviation of 0.211 Amps.

A vacuum gauge indicates that the pressure of air in a closed chamber is 02 bar (vacuum) The pressure of the surrounding atmosphere is equivalent to 750 in of mercury The density of mercury is 13.95 g / cn and the acceleration of gravity is 9.8.

The Reynolds number for flow over a fixed horizontal flat plate is constant throughout its length. a) True b) False

Briefly describe the function of the thermostatic expansion valve in a vapour compression refrigeration system