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The full-load slip of a squirrel-cage induction motor is 0.06, and the starting current is five times the full-load current. Neglecting the stator core and copper losses as well as the rotational losses, obtain
A. the ratio of starting torque to the full-load torque
B. the ratio of maximum to full-load torque and the corresponding slip
The battery is made by connecting 5 unit cells in series and then by connecting 6 of these series cells in parallel. Each unit cell has the voltage of 1.25 V and the internal resistance if 2.2 Ohm.
The purpose of this problem is to show you the connection between Fourier series and linear algebra. For simplicity, we will consider a finite basis. All questions will be referred to the following basis B = {1, sin(400t), cos(400t), sin(800t), cos..
Explain what you did in the program to reverse the display of the bar graph, making the bar graph illuminate with the LEDS on and turning off as you dimmed the light.
a single phase 440V 80kW load with a lagging Pf of .8 is supplied through a feeder of .6+j1.6 ohms and a single phase 100 kVA, 220/440 V transformer. the equiv impedance of the transformer referred to the High Voltage side is 1.15+j4.5 ohm.
A ripple voltage of 0.4Vpp is required. Diodes are assumed to have 0.7V drop. Determine the 60Hz transformer secondary voltage and the size capacitor required. What would be the PIV for the diodes
find the Laplace transformation to find the v(t) that satisfies the following firs-order differential equation : a) 500 dv(t)/d(t) +2500 v(t)= 0 , v(-0)= 100V b) dv(t)/d(t) +200v(t)= 400u(t)V , v(-0)= -100V
Consider the circuit shown in Figure. Use KVL and KCL to find the currents through and voltages across each resistor.
Calculate the average power delivered to the circuit. - Draw the admittance diagram. - Draw the phasor diagram of the currents Is, IR, and IL, and the voltage E.
What is the magnitude of the force that the unknown charge exerts on the charge of magnitude -0.600 micro-Coulombs?
Prove that the ratio of depth to width of the strongest beam that can be cut from a circular log of wood having diameter d is 1.414
Find the angular velocity of a waveform with a period of 2 s, 0.3 ms, 4 µs and 2 1 6 s.
Calculate β for two transistors for which α=0.99 and 0.98. For collector currents of 10 mA, find the base current of each transistor.
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