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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
Find the current through each resistor for the networking below using Superposition Theorem.
Describe in detail the construction and working of digital type oscilloscope.
I need to know about the zener diode
A circular ring of magnetic material has a mean length of 1m and a cross sectional area of .001m^2.A sawcut of 5mm width is made in the ring . calculate the magnetizing current req
Equivalent Circuit : The equivalent circuit of a UJT is shown in fig. The P - N junction represented in the emitter by a diode. Silicon bar being lightly doped has a high res
advantages and disadvantaages of superposition
Q. What is meant by Thermal Runaway? Explain with reference to a transistor.How is it avoided in circuits? The collector current of a transistor increases with increasing tempe
Direct Addressing In this addressing mode one of the operands is the data stored in the memory. The memory address of the operand is directly given in the instruction
Q. Common control switching system? Common Control Switching System: A functional block diagram of a common control switching system is displayed in Figure. Control functions
Q. A balanced wye-connected load with a per-phase impedance of 4 + j3 is supplied by a 173-V, 60-Hz three-phase source. (a) Find the line current, the power factor, the total
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