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A nickel wire carrying electric current of 1.5 mm diameter and 50 cm long, is submerged in a water bath which is open to atmospheric pressure.
Calculate the voltage at the burn out point, if at this point the wire carries a current of 200A.
Industrial plant consists of 4-motors and transformer. Two induction motors and two synchronous motors are installed with the following data: The slip range of induction motors is between: s = 0.03-0.05
a tank contains fuel oil of relative density 0.75 and exerts a pressure of 12 knm2 onto the base of the tank. calculate
As a pickup truck (total mass of 2500 kg, including fuel and driver) approaches a rise in an otherwise flat road, the driver presses the clutch and begins to coast. Initially, the truck was moving at 26 ms. For many reasons, including friction losses..
a 12.7 mm diameter twist drill is used to drill a hole in a low-carbon steel workpiece using a feed of 0.3 mmrev and a
Determine the COP of the heat pump that applies energy to a house at a rate of 4500kj/h for each kW of electric power it draws. Also, determine the rate of the energy absorption from the outdoor air.
describe the linear branched crosslinked and network molecular chain formations in polymers. by comparing i ldpe with
If the efficiency of the turbine in converting the mechanical energy given up by the fluid to the turbine shaft is 89% (nt = 0.89), calculate the friction loss in the turbine in J/kg.
the loop transfer function of a single-loop negative feedback system isls gcsgs ks 2.5.5 3.2 s2s 1s 10s 30this
A vapor-compression refrigeration system with a capacity of 10 tons has superheated Refrigerant 134a vapor entering the compressor at 158C, 4 bar, and exiting at 12 bar. The compression process can be modeled by py1.01 5 constant.
steam with a mass flow rate of 20 kgs enters an adiabatic turbine at a pressure of 10.0 mpa and a temperature of
a cold storage room has walls made of 0.23 m of brick on the outside 0.08 m of plastic foam and finally 1.5 cm of wood
A centrifual pump is used to raise water against a static head of 18 m. The suction and delivery pipes, both .15m in diameter, have respectively, friction head losses amounting to 2.25 and 7.5 times dynamic head. The impeller, which rotates at 1450 r..
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