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Two batteries A and B are connected in parallel (positive to positive) with each other and this combination is connected in parallel with a battery C; this is in series with a 25 Ω resistor, the negative terminal of C being connected to the positive terminals of A and B. Battery A has an emf of 108 V and internal resistance 3 Ω , and the corresponding values for B are 120 V and 2 Ω . Battery C has an emf of 30 V and negligible internal resistance. Sketch the circuit and calculate
(a) the value and direction of current in each battery and
(b) the terminal p.d. of A.
Consider a Si phtodiode that is designed for operation at 900 nm. GIven a choice of two possible AR coatings, SiO2 with a refractive ndex of 1.4 and TiO2 with a refractive index of 2.3, which would you use and what would be the thickness of the AR..
If an amplifier has a peak-to-peak output voltage of 15 V across a load resistance of 1 k?, what is the power gain if the input power is 400 μW?
If you had to explain to a 7-year-old child why engineering is important to society, what information from the history of engineering would you relate? Why?
Calculate the SNR due to quantization using the MATLAB program.
Define priority encoder Define multiplexer. Define binary decoder. What are the two steps in gray to binary conversion? Write the names of Universal gates.
An AC source which produces a peak voltage of 169.7 V is connected across a resistor of 10 Ω. How much energy is dissipated in the resistor in 5 s?
If a plane has intercepts at 2a, 3a, and 4a along the three Cartesian coordinates, where a is the lattice constant, find the Miller indices of the planes.
A 4-pole, 50 Hz, 3-phase induction motor has a rotor resistance of 4.5 Ω/phase and a standstill reactance of 8.5 Ω/phase. With no external resistance in the rotor circuit, the starting torque of the motor is 85 Nm.
Calculate the volume of aluminium conductor required for the line when (i) single phase, 2-wire system is used (ii) 3-phase, 3-wire system is used.- Calculate the d.c. supply voltage.
Find the reserve capacity of the plant ,the daily energy produced and maximum energy that could be produced daily if the plant while running as per schedule, were fully loaded.
Calculate the sag from the taller of the two supports which must be allowed so that the factor of safety shall be 5.
Select two different applications that use electrical wiring.
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