Mastering Engineering with Pearson eText -- Standalone Access Card -- for Electrical Engineering: Principles & Applications
7th Edition
ISBN: 9780134486970
Author: Allan R. Hambley
Publisher: PEARSON
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Chapter 9, Problem 9.5P
Compute the values of
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a. An amplifier has a gain of 500. What is the dB gain?
b. A three-stage amplifier system has dB gains of 15 dB, 32 dB, and 6 dB. What is the overall gain of the system in dB?
Q1) A 3-phase full converter charges a battery from a three-phase supply of 230 V 50 Hz. The battery
amf is 200 V and its internal resistance is 0.552. On account of inductance connected in series with
the battery, charging current constant at 20A.
(a) Compute the firing angle delay and the supply power factor Also Draw output voltage.
(b) In case it is desired that power flows from de source to ac load in part (a), find the firing angle
delay for the same current.
6:22 PM P
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Chapter 9 Solutions
Mastering Engineering with Pearson eText -- Standalone Access Card -- for Electrical Engineering: Principles & Applications
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- a single circuit 50hz transmission line is 362 km long. the load is125mw at 200kv with 100% power factor. 1. evaluate the incident and reflected voltages at the receiving end of the line and at the sending end of the line. 2. determine the line voltage at the sending end from the incident and reflected voltages. 3. computer the wavelength and velocity of propagation. parameters of the line are r = 0.1069 ohms/km. l=1.355mh/km c=8.452nf/km g=0arrow_forwardQ1. Figure 1 shows a differential amplifier. Assume that all transistors are identical. ẞ=180, V = 0.026 Vand V = 0.7V. a) b) Show that the d.c. bias current to the differential pairs is Iccs = 0.6 mA. Calculate the d.c. voltages at the output terminals V。1 and V02- c) Given that the input signals are v₁ = 4 sin(wt) and V₁₂ = 2sin(wt) in mV, find the a.c. voltage between V01 and V02-arrow_forwardQ1. Figure 1 shows a differential amplifier. Assume that all transistors are identical. ẞ=180, V = 0.026 Vand V = 0.7V. a) b) Show that the d.c. bias current to the differential pairs is Iccs = 0.6 mA. Calculate the d.c. voltages at the output terminals V。1 and V02- c) Given that the input signals are v₁ = 4 sin(wt) and V₁₂ = 2sin(wt) in mV, find the a.c. voltage between V01 and V02-arrow_forward
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