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how to measure
Using the LM741operational amplifier build a current amplifier with the voltage gain of |A V | = 300 v/v ± = 20% . Measure all necessary parameters of the amplifier (as per delive
Q. Explain the working principle of a d.c. generator. Explain clearly the function of commutator in d.c. machines. Sol. Working principle of a D.C. generator: For the 2- po
Consider the magnetic circuit of Figure with an air gap, while neglecting leakage flux. Correct for fringing by adding the length of the air gap l g = 0.1 mm to each of the other
A 100-kW, dc shunt generator, connected to a 220-V main, is belt-driven at 300 r/min, when the belt suddenly breaks and the machine continues to run as a motor, taking 10 kW from t
Q. Explain the different coupling schemes used in amplifiers? When amplifiers are cascaded, it is necessary to use a coupling network between the output of one amplifier and th
A battery having of five cells in series. Each cell is 2.5V and internal resistance is 0.05 Ω. A battery is linked to the load resistance of 15Ω. Verify: i. Total e.m.f
Q. Explain the use of CRO for frequency measurement. Measurement of frequency: The frequency of the periodic signals is easily measured with a CRO. The frequency of a si
Q. The quantum levels of a quantizer are separated by the step size δv = 0.2 V, with the lowest and highest levels of-3.3 V and +3.3 V, respectively. A sequence ofmessage sample
Determine power reflection coefficient at the input port: For the MESFET equivalent circuit shown below, find S 11 and S 22 . Note that resistances associated with the voltag
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