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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. A tank is filled with water to a height of 12.5cm.The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4cm.What is the refractive i
Q. What is Elementary Diode Circuits? Semiconductor diodes are used in a wide variety of applications. Their usage abounds in communication systems (limiters, gates, clippers,
commutator in d.c machine acts as... what????
what is the necessity of copper brushes in dc motors?
ACI Add Immediate with Carry Instruction Similar to ADC instruction 8 bit data specified in the instruction and Carry are added to the contents of the accumulator and
The rectangular pulse train of Figure (a) consists of pulses of height A and duration D. Such pulse trains are employed for timing purposes and to represent digital information. Fo
Consider the operation of a dc shuntmotor that is affected by the following changes in its operating conditions. Explain the corresponding approximate changes in the armature curre
Q. Advantages and Disadvantages of rc coupled amplifier? Advantages 1. Aids excellent frequency response.The gain is constant over the audio frequency range 2. It has l
different coupling methods
A series RLC circuit consisting of resistor of 200 ohms, an inductor of 0.214H and a capacitor of unknown value. When this circuit is energized by 240 i) value of capacitor ii) vol
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