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Name the materials used in case of Solder and give reasons.
Solder: For soft solders tin, lead (in 50-50 ratio) alloy and for hard solders copper- zinc and silver alloy (in several proportions) are used due to their good electrical conductivity and low melting points.
For example:
(i) Soft solders: 40 percent Pbt and 60 percent Sn
(ii) Tinman's solders: 38 percent Pbt + 62 percent Sn
(iii) Plumber solders: 60 percent Pbt and 37.5 percent Sn + 2.5%
Antimony likewise lead silver cadmium silver and tin-zinc solders and so on.
principle and operation of 3phace induction motor
Q. what is frequency synthesized signal generator? Describe its circuit in detail. OR Give the circuit details of frequency synthesizer also explain its working. OR
Procedures and methods of the experiments A). In order to measure the true RMS values of the currents and voltages, students used the true RMS multimeter. It requires two
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A 100-kW, 250-V shunt generator has an armature-circuit resistance of 0.05 and a field- circuit resistance of 60 . With the generator operating at rated voltage, determine the i
WHOLE COIL WINDING
2+7
Describe in detail the construction and working of digital type oscilloscope.
A forward converter has the following parameters: input source voltage V s = 100 V, N 1 /N 2 = N 1 /N 3 = 1, magnetizing inductance L m = 5 mH, output inductor L o = 200 μH, C
Q. With a direct current of I A, the power expended as heat in a resistor of Ris constant, independent of time, and equal to I 2 R. Consider Problem and find in each case the effe
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