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Q. A 75-kVA transformer has an iron loss of 1 kW and a full-load copper loss of 1 kW. If the transformer operates on the following load cycle, determine the all-day efficiency:
8 hours full load at unity power factor
8 hours no load
8 hours one-half full load at unity power factor
If a high resolution emcoder is used for position control, will the number of pole count in the DC motor be matter? What is the requirement for the DC motor in order to work with h
Q. (a) Consider the capacitor - input filter circuit of Figure and obtain the z-parameters for the circuit. (b) Determine the transfer function V 2 /V 1 when I 2 is zero.
Consider the following signals, sketch each one of them and comment on the periodic nature: (a) x(t) = A cos(2πf 0 t + θ), where A, f 0 , and θ are the amplitude, frequency, and
Q. What do you mean by Antenna gain? Antenna gain depends on both shape and size. Dipole antennas, commonly used at lower radio frequencies, are made up of a rod or wire of len
Q. Athree-phase, 600-kVA, 2300:230-V,Y-Ytrans- former bank has an iron loss of 4400 W and a full- load copper loss of 7600 W. Find the efficiency of the transformer for 70% full lo
Find the current through each resistor for the networking below using Superposition Theorem.
One battery having of three cells in series. External resistance is 5 Ω E.m.f each cell is 1.5V and internal resistance is 0.2?. Measure the current flow and draw the circuit.
Bureau of Energy Efficiency Setting up of the Bureau of Energy Efficiency The Bureau of Energy Efficiency has been established with effect from 1st March, 2002 under the
how capacitor works as transducer?
Q. Illustrate about Transfer Functions? The transfer function is a means by which the dynamic characteristics of devices or systems are described. The transfer function is a ma
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