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A 10 - hp, 250-V shunt motor has an armature circuit resistance of 0.5 and a ?eld resistance of 200 . At no load, rated voltage, and 1200r/min, the armature current is 3 A. At full load and rated voltage, the line current is 40A, and the flux is 5% less than its no-load value because of armature reaction. Compute the full-load speed.
Give some applications of constantan. Constantan is an alloy of nickel and copper. It is used in thermocouples, motor starters and precision resistors.
Q. What do you mean by FM Stereo? IT shows the block diagram of an FM stereo transmitter and an FM stereo receiver. The following notation is used: • f L (t), fR(t): Left a
what is a transformer?
Technology Options for Metering Energy meters classically consist of an energy measurement apparatus for measuring energy consumption and a gauge in which is visible outside t
Zero Flag Since results is non zero in this example zero flag is reset.
In the circuit above, V1 is a dc supply which outputs 12V, R1 has a value of 100 Ω and C1 is 100µF. The switch has been left in the position shown for a long time such that there i
Impurities in Semiconductors Can be added in accurately controlled amounts. Can modify the electronic and optical properties. Used to change conductivity over wide ra
Define Time and Shift Invariant? Time and shift invariant means that the system characteristics and shift do not change with time, i.e. the system output is independent of the
Connection of Shunt Capacitors at 11 kV Substations 11 kV automatic switched capacitor banks are installed on bus of 33 or 66 kV substations. This has the facility that the re
The field winding of a 200 V d.c. machine has a resistance of 20? and an inductance of 500mH. Calculate: (a) The time constant of the field winding (b) The value of curr
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