Compare the specific fuel consumption of a turbojet and a ramjet that are being considered for flight at M = 1.5 and 50,000 ft altitude (ambient pressure and temperature: 11.6 kPa and 205 K, respectively).

What is the ideal cooling system for low horsepower motor? For example1hp motor

A CPU chip with a footprint of 2.5 cm by 2 cm is mounted on a circuit board. The chip rejects heat to the environment at 28oC by convection and radiation. The outer casing of the chip has an emissivity of 0.

A capillary tube is immersed vertically in a water container. Knowing that water starts to evaporate when the pressure drops below 2 kPa, determine the maximum capillary rise and tube diameter for this maximum-rise case.

Energy is not conserved because it can be transferred in term of work and heat. a) - True b) - False

An automobile tire with a volume of 0.8 m3 is inflated to a gage pressure of 200 kPa. Calculate the mass of air in the tire if the temperature is 23 °C.

What is the function of a regulator?

an electric heater consumes 3.6MJ when connected to a 250V supply for 40minutes find the power rating of the heater and the current taken from supply

A cylindrical rod 100 mm long and having a diameter of 10.0 mm is to be deformed using a tensile load of 27,500 N. It must not experience either plastic deformation or a diameter reduction of more than 7.5*10-3 mm.

Fuel cells have been proposed for use in cars and for power generation as part of a hydrogen economy. They offer the advantages of higher efficiency and cleaner fuel with insignificant pollutants.

Technician A says that clutch slippage can be a result of excessively strong pressure plate spring (s). Technician B says that when replacing the friction disc, it is good practice to also replace the pressure plate. Who is correct?