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Low Pressure Gas Hazards : Safety screens and wire-mesh guards should be placed round evacuated glassware and safety goggles or a face shield must be worn against the possibility of implosion. This particularly applies when large desiccators or Buchner funnels are being evacuated. 'Take care when connecting thin walled glassware to a vacuum line or filter pump. The rule is, don't do so ' unless it is designed to withstand low pressures. Glassware should be examined for flaws before it is evacuated. If a crack occurred in a vessel which was partially evacuated, the effect of this enormous force compressing the weakened flask would cause it to implode (i.e. to explode inwards) propelling , fragments of broken glass in all directions.
Figure: (a) Buchner funnel (b) Vacuum desiccator (c) 'Protective wire-mesh guard
discuss the factor affecting the emf induced in electric machines
Discuss about signal distortion in optical waveguides Ans: The major reason for signal distortion within optical waveguide is dispersion. Dispersion of the transmitted
A synchronous motor with a synchronous reactance of 12 ohms is operating with a current of 100 A at unity power factor supplying power to a large compressor. The phasor diagram for
OBJECTIVES OF NEP: Access to Electricity for whole households within the next five years. Availability of Power to be ensured to meet the demand through 2012. Pe
Generation ofwide-band FM can be done by variousmeans.However, only themost common and conceptually the simplest one, known as the direct method, is considered here. It employs a
Q. For the NOR and inverter realizations shown in Figure, find the truth table, the type of gate realized, and the expression for the logic output, in each case.
importance of amplifier in electronic circuits
A step-down transformer has primary turns Np = 100; secondary turns Ns = 10; primary winding resistanceRp = 100 ?; secondary winding resistance Rs = 2 ?. Assume that there is no l
a) Get the best linear relationship in accordance with least square analysis for the following data:- X 0.9 2.3 3.3 4.5 5.7 6.7 Y 1.1 1.6 2.6 3.2 4.0 5.0 b) The table belo
Q. A shift register can be used as a binary (a) divide- by-2, and (b) multiply-by-2 counter. Explain. Q. Show a block diagram of a 4-bit shift-right register using JKFFs.
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