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(a) A moving coil ammeter, a hot wire ammeter and resistance of 100 n are connected in series with a rectifying device across a sinusoidal alternating supply of 200 V. If the device has a resistance of 100 N to the current in one direction and 500 A to opposite direction, calculate the reading of the two ammeters. (b) The maximum values of the alternating voltage and current are 400 V and 20 A respectively in a circuit connected to a 50 Hz supply. The instantons value of voltage and current are 283 V and 10 A respectively at t = 0, both increasing positively. (Take the voltage and current to be sinusoidal) (i) Demonstrate the expression for voltage and current at time t (ii) Determine the power consumed in the circuit.

(a) A moving coil ammeter, a hot wire ammeter and resistance of 100 n are connected in series with a rectifying device across a sinusoidal alternating supply of 200 V. If the device has a resistance of 100 N to the current in one direction and 500 A to opposite direction, calculate the reading of the two ammeters. (b) The maximum values of the alternating voltage and current are 400 V and 20 A respectively in a circuit connected to a 50 Hz supply. The instantons value of voltage and current are 283 V and 10 A respectively at t = 0, both increasing positively. (Take the voltage and current to be sinusoidal) (i) Demonstrate the expression for voltage and current at time t (ii) Determine the power consumed in the circuit.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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QUESTION 1 (a) A moving coil ammeter, a hot wire ammeter and resistance of 100 n are connected in series with a rectifying device across a sinusoidal alternating supply of 200 V. If the device has a resistance of 100 n to the current in one direction and 500 n to opposite direction, calculate the reading of the two ammeters. (b) The maximum values of the alternating voltage and current are 400 V and 20 A respectively in a circuit connected to a 50 Hz supply. The instantons value of voltage and current are 283 V and 10 A respectively at t = 0, both increasing positively. (Take the voltage and current to be sinusoidal) (i) Demonstrate the expression for voltage and current at time t (ii) Determine the power consumed in the circuit. (c) Three sinusoidal alternating current of rms values 5, 7, 5 and 10 A are having same frequency of 50 Hz, with phase angles 30', -60', and 45'. (i) Determine their average values (ii) State their equation instantons (iii) Construct the waveforms and phasor diagrams taking first current as the reference.
Transcribed Image Text:QUESTION 1 (a) A moving coil ammeter, a hot wire ammeter and resistance of 100 n are connected in series with a rectifying device across a sinusoidal alternating supply of 200 V. If the device has a resistance of 100 n to the current in one direction and 500 n to opposite direction, calculate the reading of the two ammeters. (b) The maximum values of the alternating voltage and current are 400 V and 20 A respectively in a circuit connected to a 50 Hz supply. The instantons value of voltage and current are 283 V and 10 A respectively at t = 0, both increasing positively. (Take the voltage and current to be sinusoidal) (i) Demonstrate the expression for voltage and current at time t (ii) Determine the power consumed in the circuit. (c) Three sinusoidal alternating current of rms values 5, 7, 5 and 10 A are having same frequency of 50 Hz, with phase angles 30', -60', and 45'. (i) Determine their average values (ii) State their equation instantons (iii) Construct the waveforms and phasor diagrams taking first current as the reference.
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