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A 400/100 V, 10 kVA, 2-winding transformer is to be employed as an autotransformer to supply a 400 V circuit from a 500 V source. When tested as a 2-winding transformer at rated load, 0.85 pf lagging, its efficiency is 0.97%.
(a) Determine its kVA rating as an autotransformer.
(b) Find its efficiency as an autotransformer.
If the power factor of the motor be changed to 0.866 lagging. Determine the reading of the two wattmeters, the total power remaining unchanged.
Advertising has been likened to offering a performance bond, where the seller must relinquish the bond if certain performance goals are not met. What is the link between advertising and bonding?
How are the wires connected to the switches where there are two switches that can operate a single light
The trigger circuit of thyristor has sourcevoltage of 17V and load line has slope of -120V per ampere. The minimum gate current to turn on the SCR is 24mA. Find source resistance required in the gate circuit
An industrial load is powered by a purely sinusoidal voltage source of 277V (rms). The load current has a THD of 20%, and the fundamental component of the current is 20∠30° A. Compute the load power.
To what supply is it connected? To what circuit node is the additional resistor connected? What is the required value of R?
A device with input x(t) and output y(t) is characterized by: y(t) = x2(t).An FM signal with frequency deviation of 90 kHz and modulating signal bandwidth of 5kHz is applied to this device. What is The bandwidth of the output signal.
Find the Thevenin equivalent circuit at terminals (a,b). Also find the Norton equivalent circuit at terminals (a,b). Choose RL so that the current flowing through it is 0.8 A.
A critical aspect of web design is the approach that you take to define and develop the parameters of your site. This includes your review and assessment of your own work to validate your site to make sure that it meets the needs of your client.
Design a full wave (60Hz) rectifier circuit with the capacitor filter that produces 5V 10A DC at the output with the ripple voltage of less than 5%. (Assume Von = 1 for the diodes and do not forget to draw your circuit and a time diagram of the vo..
Write a program to do the following: Declare a 4x4 2D integer array, Initialize the contents of the array to random numbers using rand() , Print the contents of the array, Prompt the user to enter a number to search for inside the array
the input voltage to an op amp is a large voltage step. the output is a exponential waveform that changes 2.0V in 0.4us. what is the slew rate of the op amp.
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