Show that the rating of an electrical machine is proportional to the specific magnetic loading, specific electric loading dimensions of the machine and the speed of the machine.
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Show that the rating of an electrical machine is proportional to the specific magnetic loading, specific...
Problem 1 (20 %) We want to analyse an electrical circuit described as a 2-port (Figure ). The circuit has source terminal with a constant ideal voltage source Vs and a loading terminal with a loading resistor Ri. Circuit with passive components Figure 1. General electric circuit We want to represent the circuit as seen from the loading terminal as a Thevinin and a Norton equivalent. Sketch these crt equivalents and describe the steps how to determine their component values....
stion 51 Power output per unit volume of a magneto hydrodynamic (MHD) generator is proportional O a. Square of the magnetic field strength. b. Specific electrical conductivity of gas Oc. Square of the fluid velocity. o d. All of these. stion 52 Direct conversion of heat energy into electrical energy is possible through a. Fuel or solar cells b. Both (a) and (c) C. Thermionic converters. d MHD generators
1. Hysteresis loss in a magnetic material is proportional to square of frequency and Eddy current loss can be reduced by using a high permeability magnetic material. True or false? 1 point 2. A sinusoidal voltage impressed on a coil wound around a closed magnetic circuit made of M-5 electrical steel will lead to non-sinusoidal flux and non-sinusoidal exciting current. True or False? 1 point 3. An open Delta connection can operate at a) 58% b) 68% c) 78% of...
For an electromagnetic wave, A. the electric and magnetic fields are perpendicular to each other and to the direction of propagation B. the ratio of the electric and magnetic fields strengths is proportional to the speed of propagation C. the ratio of the electric and magnetic fields strengths is always less than the speed of propagation. D. the electric and magnetic fields are parallel to each other and to the direction of propagation. E. A & B F. C&D 10....
Please show full solution. Will give good rating ! A uniform magnetic field of magnitude 3.00 LT is applied in the negative x direction. An electron is shot at the origin with an initial velocity of v (1.50 i+ 10.0 k) x 10° m/s and moves in a helix, as shown. Determine the electron's acceleration in the x direction. а. the radius of the helical path. b. the time is takes the electron to complete one revolution. c. В
4-pole, 50-Hz synchronous generator has a rating of 200 MVA, 0.8 power factor lagging. The kinetic energy of the machine at synchronous speed is 1000 MJ. The machine is running steadily at synchronous speed and delivering 50 MW to a load at a power angle of 8 electrical degrees. The load is suddenly removed. Determine the acceleration of the rotor in rpm/S. If the acceleration computed for the generator is constant for a period of 8 cycles, determine the following...
Electrical Energy objective Measure the specific heat of water using an electric heating element АС Power Supply VRMs = 6.30 Volts Electric power P = VI Pava = VRMS IRMS Thermal power Q = mc AT dQ = mc dT w pode - cmwcw+m ca de Calorimeter Water
3) A machine finished bracket is clamped between rigid plates and subjected to loading as shown. a) Find factor of safety for fatigue failure. b) Will the part has infinite life? c) If the beam has to last for 10 cycles what modifications will you do to improve performance Assume a reliability factor of 99.9%. Dimensions are given below. Ignore stress concentration due to hole near the beam tip (stresses there are low). b- 1 in d- 0.75 in. D-0.94...
A ball bearing on a shaft has a variable loading as shown in the table below. What is the minimum C10 rating required for the bearing to last 10,000 hours for Ls Life? One Cycle Phase 2 6 1500 2000 1.8 Phase 1 4 1000 Phase 3 Minutes in Phase Speed (RPM) Bearing Load (N)3000 Application Factor 800 5000 1.5 1.2 A ball bearing on a shaft has a variable loading as shown in the table below. What is the...
Please complete all steps and explain as thoroughly as possible for the best possible rating. Power lines produce both electric and magnetic fields. The interior of the human body is an electrical conductor, and as a result, electric fields are greatly reduced in magnitude within the body The electric fields inside the body from are much smaller than electric fields normally existing in the body However, magnetic fields are not reduced in the body. Earth's magnetic field, approximately 5 ×...