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Q. A dc series motor operates at 750 r/min with a line current of 100 A from the 250-V mains. Its armature-circuit resistance is 0.15 and itsseries-field resistance is 0.1 . Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A,determine the motor speed at a line current of 25 A at 250V.
Find the minimum rate of sampling that must be used to convert the message into digital form: (a) If an audio message has a spectral extent of 3 kHz. (b) If a television sign
what is 2 bit counter?
R.h. corkscrew rule Note the direction of the flux is given by Maxwell's 'R.H. corkscrew rule' and that the flux lines are continuous Applying Ampere's Law to a concentri
A 300 km, 3-phase, 50Hz transmission line has spacing as shown in Figure. Each phase of the line consists of a bundle of three conductors. (a) Find the total per-phase inductanc
What is the main thing to look for in calculations of air gaps?
CPU Based Exchange: In centralized control, all control equipment is replaced by a single processor which should be quite powerful. It should be capable of processing 10 to 100 c
Q. what is frequency synthesized signal generator? Describe its circuit in detail. OR Give the circuit details of frequency synthesizer also explain its working. OR
why armature lamination notched in outer periphery
Operation of Zener Diode The Zener diode's operation depends upon the heavy doping of its p-n junction permitting electrons to tunnel from the valence band of the p-type mater
what is difference between dual trace and dual beam cro?
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