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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
Explain the term half duplex transmission. A half duplex channel can receive and send, but not at similar time. It's as a one-lane bridge where two-way traffic should give way
Phasor relation between different voltages and currents: In the capacitive circuit of Figure, find 1. Impedance, 2. Resultant current, 3. Power factor,
Q. Show Benefits of digital systems? Ever since most digital systems have only two possible states, there is high degree of accuracy in the transmission of data. With an analog
Aggregate Technical and Commercial Loss It is unfortunate in that addition to T&D losses, there is also a loss in revenue because of non-realisation of billed demand which lea
region of convergence of (Z+2)*(12z-1)/((3z-1)*(4z+1 ))
Q A residence is supplied with a voltage v(t) = 110√2cos120πt Vand a current i(t) = 10√2cos120πt A. If an electricmeter is used tomeasure the average power, find the meter reading,
Pressure guage
This assignment is intended to provide an easier analysis of how windows work. Begin by looking at individual spectrum bins as affected by off-bin-centred frequency components with
Q. In a hundred-line exchange 24 two-motion selectors are used. Draw schematic you suggest for this exchange and illustrate its working. How many simultaneous calls can be made du
when i/p voltg is grater than battery diode is clse or open
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