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Sparking : In ordinary domestic situations, small electrical sparks are usually not hazardous. In certain conditions which are frequently encountered in science labs, even the smallest sparks can produce catastrophic results due to the presence of dust or flammable fumes and vapours. At the very least, sparks will interfere with electronic equipment such as pH meters. Typical sources of sparking in the lab are:
i) dirty switches
ii) bimetallic thermostats
iii) static sources (see above)
iv) live sockets
You can find examples of equipment designed specially to overcome the problems of sparking in refrigerators or petroleum stores. Domestic refrigerators are not spark-proof and must not be used in the lab.
Discribe the ultrasonic machining with main emphasis on the following (a) Basic working Principle and machining set up (b) Accuracy and surface complete on work materials
Binary Coded Decimal to Decimal Conversions • Step1. Break up the Binary Coded Decimal number into 4 bit binary number, starting from the least significant binary bit. • Step2
Its not essential that a power plant uses only two rectifiers, it depends on the load there at the site and the capacity of the rectifier or SMPS. Assume the load at the site is 12
governer characteristics
(a) For the Zener diode series voltage regulator shown in the Figure. calculate V L , I Z , V R and P Z for R L = 1.2 KΩ and repeat it for R L = 3 KΩ ? Consider Zener breakdow
(a) Evaluate whether the sinusoidal signal x(t) = A cos (2πf 0 t + θ) is an energy-type or a power-type signal. (b) Show that any periodic signal is not typically energy type, a
explain dynamically induced emf and derive expression for it
Q. A two-pole, three-phase synchronous generator has a balanced three-phase winding with 15 turns per phase. If the three-phase currents are given by i a = 100 cos 377t, i b =
EXPLAIN UJT WITH ALL SUBTOPICS CONSISTS
What do you mean by internal data bus? Internal Data Bus: A bus which operates only in the internal circuitry of the CPU, communicating between the internal caches of memory
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