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Q. A transformer has its maximum efficiency of 0.9800 when it delivers 15 kVA at unity power factor. During the day it is loaded as follows:
12 hours 2 kW at power factor 0.5
6 hours 12 kW at power factor 0.8
6 hours 18 kW at power factor 0.9
Determine the all-day efficiency.
Q. What do you mean by Counters? The shift register can be used as a counter because the data are shifted for each clock pulse. A counter is a register that goes through a pred
Q. Adaptive control process in motor-speed control system? Figure illustrates the adaptive control process as applied to a motor-speed control system, which is based on adjus
LT Metering or Low Tension Metering The subsequent types of meters are generally used for LT consumers: Whole Current Meters i) Single phase meters ii) 3-phase
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Q. With a direct current of I A, the power expended as heat in a resistor of Ris constant, independent of time, and equal to I 2 R. Consider Problem and find in each case the effe
Find I and V in the figure using ideal diode model
The FESTO conveyer consists of 600mm belt driven by a 24V d.c. motor at a rate of 13 seconds per metre. A relay on the FESTO panel controls the motor operation and is wired for sou
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Classify the following signals as energy signals or power signals. Find the normalized energy or normalized power of each. a. ? ? , 0, 0 0, at Ae t a x t elsewhere
Digital Electronics: We have study the fundamentals of Digital circuits. Primary we have studied the mathematics of Binary numbers also called as Boolean algebra and how to im
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