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INTRODUCTION : Electricity is one of the finest gifts of science to the mankind since just a flick of switch can flood the room with light or put on a fan, an air conditioner or a heater. Many electrical appliances are available to make life comfortable. In a laboratory most of the instruments and all specialised equipment and computers would be usable only with electrical power. However, electricity also presents a number of hazards. Its misuse can cause serious injury, give shock that may be fatal or start devastating fires. Most electrical accidents are caused by worn out equipment or improper use - both of which are avoidable. For instance, according to National Crime Records Bureau, there have been 3502 and 3861 accidental deaths in on country due to electric shock during 1994 and 1995, respectively. Similarly the use of LPG in laboratory is convenient for a number of purposes; but if used carelessly, it may lead to fire and other hazards.
Besides LPG other compression gases also need careful handling and may pose a potential danger in-the event of misuse. In this unit we will discuss the possible hazards due to improper use of electricity, LPG and other compressed gases. We are going to give you some instructions to be followed for safety. The first section describes electrical hazards while the second section describes the gas hazards. In fact, the next unit deals with the fire hazards for which the in issues of electricity and LPG are also responsible to a large extent.
List the addressing modes supported by 8051. 1. Register addressing 2. Direct addressing 3. Register indirect addressing 4. Immediate addressing 5.Register addres
Analysis of Semiconductor Devices There are two complementary techniques of studying semiconductor devices: Via numerical simulation of the semiconductor equation
A heater element is made of nichrome wire having resistivity equal to 100 × 10 -8 ohm-m. The diameter of the wire is 0.4mm. Calculate the length of the wire required to get a resi
Q. What is centralized SPC? In centralized control, all control equipment is replaced by a single processor which should be quite powerful. It should be capable of processing 1
Q. When the quantum step size δv and the step size of f (t) are the same as in , the quantizer is said to have a gain of unity. If, on the other hand, the quantizer has a gain of K
Q. Explain working of Presentation Layer? This is concerned with format of the data represented, in order to overcome difference in representation of information as supplied to
Figure show two first-order triangular finite elements used to solve the Laplace equation for electrostatic potential. Find a local S -matrix for each triangle, and a global S -m
Q. What do you mean by Transconductance? The control that the gate voltage has over the drain current is measured by transconductance and is similar to the transconductance of
Name the switching schemes used in a digital exchange
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