Electrical Engineering Questions and Answers March 03, 2020

Is the circuit in figure predominantly resistive or predominantly inductive?

R1 R3 56 Q V. 25 0 V 400 Hz 33 2 R2 22 Q L1 L2 50 mH 50 mH lll

A vestigial sideband modulation system is shown below. The bandwidth of the message signal m(t) is W and the transfer function of the bandpass filter is shown in the figure. a) Determine hl (t) the lowpass equivalent of h(t), where h(t) represents the impulse response of the bandpass filter. b) Derive an expression for the modulated signal u(t).

A capacitor with capacitance C is connected in parallel to two inductors: inductor 1 with inductance L , and inductor 2 with inductance 2 L , as shown in the figure. The capacitor is charged up to a voltage V , at which point it has a charge q . There is no current in the inductors. Then the switch is closed. (Figure 1) Part A. Since the two

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fenio 10 kn R An ideal op amp is utilized in the circuit shown. 100 0 a. Calculate I, 12, l3, IL and Vx. b. Explain how Vo is effected as RL is changed. c. Calculate RL so that Vo 10 V. 10 kn

A moving-coil instrument, which gives full-scale deflection with 0.015 A has a copper coil having resistance of 1.5 Ohm at 15C and a temperature coefficient of 1/234.5 at 0 degree C in series with a swamp resistance 3.5 Ohm having a negligible temperature coefficient. Determine the resistance of shunt required for a full-scale deflection of 20 A

Draw the power circle diagram in the case IVl 1.05, IV, 0.95, Z. 0.1 85. Find (a) P12max (b) 012 at which we get P12max (c) P2imax (d) 612 at which we get P2imax oubou idonga 10 od el ads lo do o (e) Active power loss in the line when 012

A direct current ammeter and leads have a total resistance of 1.5 Ohm The instrument gives a full-scale deflection for a current of 50 mA. Calculate the resistance of the shunts necessary to give full-scale ranges 2-5, 5.0 and 25.0 amperes.