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A 3 phase 400 volt(line to line) wye connected synchronous motor has Xs= 1 ohm per phase and a negligible armature resistance. The field current is so adjusted that the internal(induced) voltage is 270volts per phase, while the motor draws 40 kw power from the source. Calculate the (a) power factor of the motor, and (b) reactive power supplied by the motor to the source.
A 500 MVA, 33kv, three phase steam turbine generator has a synchronous reactance of 1.6 p.u. It delivers a rated output at 0.8 power factor lagging. Calculate (a) the synchronous reactance per phase, (b) rated load current of the machine, and (c) internal voltage drop and output voltage.
A synchronous motor has the following parameters per phase. E=2kv, Eo=5kv, X2=3ohms, and I=700amps. Draw the phasor diagram and determine (a) power angle delta, (b) active power(3phase), (c) reactive power(3phase), (d) power factor of the motor. If the load is removed suddenly, calculate (e) the new power angle and (f) new reactive power(3phase).
Q. Explain the principle of transistor phase shift oscillator? The phase shift oscillator consists of an inverting amplifier stage coupled to a three stage RC filter network. T
Four Quadrant Chopper or Class E chopper Figure class E chopper circuit Mode I When
Q. Based on the 8421 BCD code for decimal digits 0 through 9, develop a block diagram for a BCD encoder and its implementation scheme.
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What are Macros? Macro is a group of instruction. The macro assembler makes the code in the program each time where the macro is called. Macros are described by MACRO & ENDM di
In 8086 Carry flag, Parity flag, Auxiliary carry flag, Zero flag, Overflow flag, Trace flag, Direction flag Interrupt flag and Sign flag. Mainly there ae two types of int
diagram for full wave bridge circuit single phase,full wave centre tap circuit and haif wave rectification circuit
write the working and construction of dc motor.
Q. What is Signal Multiplexing? Frequency-division multiplexing (FDM) and time-division multiplexing (TDM) systems. When data from many sources in time are interlaced, the inte
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