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Can you please assist with explaining step by step the principles and fundamentals of the following question? i am not wanting the answer just how to work out the problem and understand the problem and acquire the skills to sokve the problem.
1) A four-pole, star-connected, squirrel-cage induction motor operates from a variable voltage 50 Hz three-phase supply. The following results were obtained as the supply voltage was gradually reduced with the motor running on no-load. Stator line voltage 220 164 112 88 42 Stator line current (amperes) 6.8 5.4 3.9 3.8 3.7 Stator power (watts) 470 360 278 244 232
a) By plotting a suitable graph from these results, determine the total of windage and friction losses, the no load magnetising current I0 (assume no load current I0 is magnetising losses) and the equivalent circuit magnetising circuit parameters R0 and X0.
b) With locked rotor and 50 volts applied to the stator, the current was 23 amperes and power input 985 watts. The resistance between two lines is 0.5 ohms. If the rotor turns per phase equals the stator turns per phase, draw the equivalent circuit of the motor and determine the values of the various components. Assume the stator phase reactance is the same value as the rotor phase reactance.
a fluid has a viscosity of x nsm2 and is placed in a concentric cylinder viscometer. the gap width is g mm and the
In a Modified Rankine Cycle used in a power plant in Wichita, KS, a Shell and Heat Exchanger needs to be installed. Water from the turbine at 90 C is cooled to 80 C in a shell-tube HX using 150 kg/s of raw water from Power Plant Lake.
calculate the air temperature and pressure at the stagnation point right in front of a meteorite entering the
1000 kg/h of milk is heated in a heat exchanger from 45oC to 72oC. Water is used as the heating medium. It enters the heat exchanger at 90oC and leaves at 75oC. Calculate the mass flow rate of the heating medium, if the heat losses to the environment..
A simple ideal Rankine cycle with water as the working fluid operates between the pressure limits of 15 MPa in the boiler and 100 kPa in the condenser. Saturated steam vapor enters the turbine. Determine the work produced by the turbine, the heat tra..
a piston-cylinder device initially contains 1.2 kg of steam with a volume of 0.2 m3. the mass of the piston is such
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a fallen tree trunk is damming up water in a creek. the tree trunk is approximately a cylinder 40 cm diameter and 4.0 m
It is known that a long log floats with its axis horizontal. A very short log, however, floats with its axis vertical. Determine the maximum length of a cylindrical walnut log 30 cm in diameter that will cause it to float with its axis vertical.
you have a desuperheater that has a steady-flow is an adiabatic mixing process that mixes superheated water vapor with
an exhaust fan in a building should be able to move 5 lbms air at 14.4 psia 68 f through a 1.25 ft diameter vent hole.
an automobile wheel test rig consists og a uniform disk a of mass ma 5500 kg and radius ra1.5 m that can rotate freely
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