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Q. Explain Cathode-ray tube?
While the CRT display is one of the oldest, it still remains one of the most popular display technologies. The raster-scanned display devices work similarly to commercial television sets, whereas graphics display devices use different technologies to achieve extremely high resolution. A CRT video signal has only two levels, with a 0 level causing a dark spot and a 1 level causing a bright spot. The appropriate combination of 1s and 0s displays data on a CRT screen, with each character displayed by dot-matrix displays, typically in 5 × 7or7 × 9 display fonts.
Q. The flux-density distribution in the air gap of a 60-Hz, two-pole, salient-pole machine is sinusoidal, having an amplitude of 0.6 T. Calculate the instantaneous and rms value
what about power genration?
how does the increase in the kinetic energy of a proton compare with the increase in kinetic energy of the alpha particle in part?
Voltages source inverter ( VSI) A voltage source inverter is a constant voltage source which is having negligible impedance. In these inverters the amplitude of output
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 its series-field resistance is 0.1 . As
Q. Current-carrying conductors? Current-carrying conductors, when placed in magnetic fields, experience mechanical force. Considering only the effect of the magnetic field, the
In the conventional dc machine (with a closed continuous commutator winding on its armature), for example, full-wave rectification of the alternating voltage induced in individual
i dont understand why equalizer connection is not used in wave windings?
Q The electric ?eld intensity due to a point charge in free space is given to be (-¯ ax -¯ ay +¯ az)/√ 12V/mat (0,0,1) and 6 ¯ az at (2,2,0) Determine the location and the value
Mathematical relationship between the induced e.m.f and the network Faraday noted that the e.m.f induced in a loop is proportional to the rate of change of magnetic flux by it:
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