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A large 3-phase, 4000 V, 60 Hz, squirrel-cage induction motor draws a current of 385 A and a total active power of 2344kW when operating at full-load. The corresponding speed is accurately measured and is found to be 709.2 r/min. The stator is connected in star (wye) and the resistance between two stator terminals is 0.10 ?. The total iron losses are 23.4 kW and the windage and friction losses12kW. Calculate the following: A) Power factor at full load. B) Active power supplied to the rotor. C) Total I²R losses in the rotor. D) The load mechanical power (kW) and torque (kN.m)
Express the bernoulli equation in terms of pressure, head and energy in English units then in SI units with the appropriate constant and conversions factors. use algebraic ubit equations to verify that the equation is correct.
a new cylindrical tank is being designed for seaworld where the 3m high plexiglass wall will be supported using i-beams
for the case study problem design the output shaft including complete specification of the gear bearings key retaining
air enters the compressor of an air-standard brayton cycle at 100kpa 300k with a volumetric flow rate of 5m3s. the
a rocket weighs 2600 lb including 2200 lb of fuel which is consumed at a rate of 25 lbs and ejected with a relative
a rocket has a nozzle which is expanded from a chamber pressure of 10 mpa to a pressure that is 23 of sea level
a particle is moving along a straight line such that its acceleration is defined as a -2v ms2 where v is in meters per
a fluid flows through an adiabatic device. at one end the velocity is 30 ms h 320 kjkg and s 0.695 kjkg k and at the
At steady state, air at 200 kPa, 325 K, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross sectional areas. The inlet cross sectional area is 6 cm squared. At the duct exit, the pressure of the air is 100 kP..
Find the turbine's (b) isentropic efficiency (%), (c) reversible work (kJ/kg), (d) irreversibility(kJ/kg), and (e) exergy destruction (kJ/kg). (f) Draw a T-s diagram of the process
you are considering two pipes to connect liquid leaving a pump to the entrance to a reactor. for a given mass flowrate
Heat is transferred from a stream of water to the refrigerant in the evaporator, and from the refrigerant to another stream of water in the condenser. In a household refrigerator, from what substance or space does the refrigerant reject heat in the c..
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