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Q. The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load current at 0.8 power factor, and 99.13%with half rated current at unity power factor. Calculate:
(a) The iron loss.
(b) The full-load copper loss.
(c) The efficiency at 3/4 load, 0.9 power factor
What is the use of 8251 chip? 8251 chip is mostly used as the asynchronous serial interface among the processor and the external equipment.
Q. Illustrate Signal attenuation? Signal attenuation in many channels can be offset by using amplifiers to boost the signal level during transmission. However, the amplifier al
how is working transfmer?
Q. Describe in detail the construction and working of analog type storage oscilloscope. Explain the principle of secondary emission. Analog Storage Oscilloscopes: Storage o
List the different types of flags affected by the arithmetic and logic operations. Carry flag, Auxiliary carry flag , Parity flag, Sign flag, Zero flag
Definition of Magnetism Magnetism is explained as the force produced by charge particles (electrons) of magnet. A magnet is a material that obtained a magnetic field.
Q. Three waveforms seen on an oscilloscope are shown in Figure. If the horizontal scale is set to 50 ms per division (500 ms for the entire screen width), and the vertical scale is
History - Field-Effect Transistor: The principle of field-effect transistors was very first patented by Julius Edgar Lilienfeld in the year 1925 and by Oskar Heil in the year
By means of nodal analysis, find the current delivered by the 10-V source and the voltage across the 10- resistance in the circuit shown in figure.
LIFO (Last In First Out) stack is used in 8085.In this type of Stack the last kept information can be retrieved first.
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