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Q. A wire with n = 1030 electrons/m3 has an area of cross section A = 1mm2 and carries a current i = 50 mA. Compute the number of electrons that pass a given point in 1 s, and find their average velocity.
Q. How do you modify the direction of rotation of a D.C. motor? Ans: The direction of rotation of DC motor will be changed either by changing the field winding connections o
Why is the signal first attenuated and then amplified?
Q. Illustrates typical thermal noise waveform? In general, any physical resistor or lossy device can be modeled by a noise source in series with a noiseless resistor, as shown
Q. (a) Two amplifiers, which can be represented by the model of Figure of the text, are connected in cascade (that is, head to tail), as shown in Figure. Let their parameters be R
Q. Analyze Diode circuit with RLC load? Consider a diode circuit with an RLC load, as shown in Figure, and analyze it for i(t) when the switch S is closed at t = 0. Treat the d
What is a microcomputer? A computer that is designed using a microprocessor as its CPU is known as microcomputer
4. Modify the circuit designed for question 3 to provide an emergency stop which will park both cylinders in the extended position (i.e. A + B +). 5. Modify the circuit designed fo
Q. Different kinds of high-tension fuses and low-tension fuses ? Ans: There are two kinds of fuses they are a) L.V Fuses - 1) HRC cartridge fuses. - 2) Semi enclosed re
Name the materials used in case of Fuses . Also give reasons. Fuses : For rewirable fuses, copper-tin and lead-tin alloy is used. For HRC and cartridge fuses silve
Q. Cause of sparking at the brushes of a DC Motor? Ans: Sparking at the brushes can be occur due to poor quality of carbon brushes, loose connection, poor armature of carbon
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