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Q. A 300-kVA transformer has a core loss of 1.5 kW and a full-load copper loss of 4.5 kW.
(a) Calculate its efficiency corresponding to 25, 50, 75, 100, and 125% loads at unity power factor.
(b) Repeat the efficiency calculations for the 25% load at power factors of 0.8 and 0.6.
Normal 0 false false false EN-IN X-NONE X-NONE Induction Heating When alternating curren
The creation of a magnetic field in a ring may need to be accessed by means of an air gap. This is typically used to apply the magnetic field to a current carrying conductor to pro
Electrical power Power P in an electrical circuit is given by the product of potential difference V and current I. The unit of power is the watt, W.
Q. Convert the following DECIMAL numbers into BINARY, double check by converting the result BINARY to DECIMAL. Assume all binary numbers are represented by 12 bits on LHS of binary
Successive-approximation analog to digital converter This converter, shown in Figure, also contains a D/A converter, but the binary counter is replaced by a successive-approxim
Input output The parallelogram symbol is used to represent the input output process as shown below. IN01H
The Lennox to Bowmanville 500 kV circuit, spanning a distance of about 180 km, has series (inductive) impedance j 0.0224 pu and shunt (capacitive) admittance j 2.34 pu, quoted on b
Define Short Lines? For short power lines (up to 50 miles; 80 km), the effects of the shunt capacitance and leakage resistance are negligible. Hence the line may be represente
a 400V 4-pole DC generator takes an armature current of 50A when rotating at 626 rpm. the armature circuit resistance is 0,25ohms. determine the generated emf. DOC
block diagram of digital control system and explain each block
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