Air is flowing in an insulated duct at a rate of 2 kg/sec. Air enters the duct at 40 oC and 8-kW of heat is added with a electric resistance heater. Find the exit temperature of air. (Cp=1.005 kJ/kgK) a) 44 b) 30 c) 54 d) 60

The ducts of an air heating system pass through an unheated area. As a result of heat losses, the temperature of the air in the duct drops by 4°C.

The term decision support system is a very specific term that implies the same tool, system, and development approach to most developers. True/False

Calculate the resulting power factor if a synchronous motor rated at 500 hp with 90% efficiency operating at rated load and at unity power factor is added to the plant instead of the capacitor. Assume constant voltage (1 hp = 0.746 kW).

The basic barometer can be used to measure the height of a building. If the barometric readings at the top and the bottom of a building are 675 and 695 mm Hg, respectively, determine the height of the building in m.

Consider an ADC with 6-bit resolution. When operating in unipolar mode, the ADC supports a 0 V-to-10 V range. What is the resolution (smallest detectable difference) in volts

16 Suppose that a steel of eutectoid composition is cooled to 550°C (1020°F) from 760°C (1400°F) in less than 0.5 s and held at this temperature.

The rotor in a shaded pole motor consists of A coils energized by alternating current B a short circuited loop of copper wire c a permanent magnet D an iron cylinder

What factors are likely to promote the formation of stress corrosion cracks?

Find the mass if the force is 18 N and the acceleration is 2 m/s2

Which process must first take place in order for the proteins in foods to be used by body cells? (1) digestion (3) synthesis (2) storage (4) excretion