Electric Circuits Fundamentals & Lab Mnl Pk
8th Edition
ISBN: 9780136125136
Author: Unknown
Publisher: PEARSON
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Chapter 8, Problem 10ST
To determine
The phase angle difference between two sine waves.
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If two sine waves of the same frequency have a phase difference of p radians, then
Select one:
a. When one wave reaches its maximum value, the other will reach its minimum value
b. Both will reach their maximum values at the same instant
c. None of the above
d. Both will reach their minimum values at the same instant
If the positive-going zero crossing of one sine wave is at 15° and that of the second sine wave is at 23°, what is the phase angle between them?
A sinusoidal alternating voltage has an r.m.s value of 200 V and a frequency of 50 Hz. it crosses the zero axis in a positive direction when t=0. Determine (a) the time when voltage first reaches the instantaneous value of 200 v and (b) the time when voltage after passsing through its maximum posituve value reaches the value 141.4 V.
Chapter 8 Solutions
Electric Circuits Fundamentals & Lab Mnl Pk
Ch. 8 - The period of a 60 Hz sine wave is 16.7 ms.Ch. 8 - The rms and average value of a sine wave are the...Ch. 8 - Prob. 3TFQCh. 8 - The peak value of a sine wave is the same as its...Ch. 8 - The number of radians in 360 is 2 .Ch. 8 - In a three-phase electrical system, the phases are...Ch. 8 - The purpose of an exciter is to supply dc rotor...Ch. 8 - In an automotive alternator, the output current is...Ch. 8 - Prob. 9TFQCh. 8 - A synchronous motor can be used when constant...
Ch. 8 - Prob. 1STCh. 8 - During each cycle, a sine wave reaches a peak...Ch. 8 - A sine wave with a frequency of 12 kHz is changing...Ch. 8 - Prob. 4STCh. 8 - When a sine wave has a frequency of 60 Hz, in 10 s...Ch. 8 - Prob. 6STCh. 8 - Prob. 7STCh. 8 - The average value of a 10 V peak sine wave over...Ch. 8 - Prob. 9STCh. 8 - Prob. 10STCh. 8 - The instantaneous value of a 15 A peak sine wave...Ch. 8 - If the rms curren through a 10k resistor is 5 m A,...Ch. 8 - Prob. 13STCh. 8 - Prob. 14STCh. 8 - Prob. 15STCh. 8 - Prob. 16STCh. 8 - Prob. 17STCh. 8 - Prob. 1TSCCh. 8 - Prob. 2TSCCh. 8 - Prob. 3TSCCh. 8 - Prob. 4TSCCh. 8 - Prob. 5TSCCh. 8 - Calculate the frequency for each of the following...Ch. 8 - Calculate the period for each of the following...Ch. 8 - A sine wave goes through 5 cycles in 10s. What is...Ch. 8 - A sine wave has a frequency of 50 kHz. How many...Ch. 8 - How long does it take a 10 kHz sine wave to...Ch. 8 - A sine wave has a peak value of 12 V. Determine...Ch. 8 - A sinusoidal current has an rms value of 5 mA....Ch. 8 - For the sine wave in Figure 8-74, determine the...Ch. 8 - If each horizontal division in Figure 8-74 is 1...Ch. 8 - In Figure 8-74, what is the instantaneous voltage...Ch. 8 - Sine wave A has a positive-going zero crossing at...Ch. 8 - One sine wave has a positive peak at 75 and...Ch. 8 - Draw two since waves as follows: Sline wave A is...Ch. 8 - Convert the following angular values from degrees...Ch. 8 - Convert the following angular values from radians...Ch. 8 - A certain sine wave has a positive-going zero...Ch. 8 - For a particular 0 reference sinusoidal current,...Ch. 8 - For a 0 reference sinw wave with an rms value of...Ch. 8 - Sine wave A lags sine wave B by 30. Both have peak...Ch. 8 - Repeat Problem 19 for the case when sine wave A...Ch. 8 - A sinusoidal voltage is applied to the resistive...Ch. 8 - Find the half-cycle average values of the voltages...Ch. 8 - Determine th rms voltage across R3 in Figure 8-77.Ch. 8 - A sine wave with an rms value of 10.6 V is riding...Ch. 8 - How much dc voltage must be added to a 3 V rms...Ch. 8 - A 6 V peak sine wave is riding on a dc voltage of...Ch. 8 - The conductive wire loop on the rotor of a simple...Ch. 8 - Prob. 28PCh. 8 - At what speed of rotation must a four-pole...Ch. 8 - A common frequency for alternators on aircraft is...Ch. 8 - Prob. 31PCh. 8 - Explain how the field in a three-phase motor...Ch. 8 - From the graph in Figure 8-78, determine the...Ch. 8 - Determine the duty cycle for each pulse waveform...Ch. 8 - Find the average value of each positive-going...Ch. 8 - What is the frequency of each waveform in Figure...Ch. 8 - What is the frequency of each sawtooth waveform in...Ch. 8 - A square wave has a period of 40s. List the first...Ch. 8 - What is the fundamental frequency of the square...Ch. 8 - Determine the peak value and the period of the...Ch. 8 - Determine the rms value and the frequency of the...Ch. 8 - Determine the rms value and the frequency of the...Ch. 8 - Find the amplitude, pulse width, and duty cycle...Ch. 8 - A certain sine wave has a frequency of 2.2 kHz and...Ch. 8 - Figure 8-84 shows a sinusoidal voltage source in...Ch. 8 - A nonsinusoidal waveform called a stairstep is...Ch. 8 - Refer to the oscilloscope screen in Figure 8-86....Ch. 8 - Accurately draw on a grid representing the scope...Ch. 8 - Accurately draw on a grid representing the scope...Ch. 8 - Based on the instrument settings and an...Ch. 8 - Examine the circuit board and the oscilloscope...Ch. 8 - Prob. 52PCh. 8 - www. prenhall.com/floyd. 53. Open file P08-53 and...Ch. 8 - www. prenhall.com/floyd. 54. Open file P08-54 and...Ch. 8 - www. prenhall.com/floyd. 55. Open file P08-55 and...Ch. 8 - www. prenhall.com/floyd. 56. Open file P08-56 and...
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- a sinusoidal alternating voltage has a r.m.s value of 200v and frequency of 50hz. it crosses the zero axis in a positive direction when t=0. determine (i) the time when voltage after passing through its maximum positive value reaches the value of 141.4 v.arrow_forwardA sinusoidal voltage wave has an RMS value of 70.71 V and a frequency of 60 HZ. Determine the value of the voltage 0.0014 second after the wave crosses the wt axis.arrow_forwardIn a symmetrical sinusoidal waveform, the negative peak is more than than positive peak. Select one: True Falsearrow_forward
- The value of form factor for a pure sine wave is a. 1.414 b. 0.707 c. 0.637 d. 1.11arrow_forwardA sine wave has a peak value of 433v what is the rms valuearrow_forwardDetermine the instantaneous value of the following the sinusoids 1 ms after the first positive cycle maximum of the cycle . 10 sin (1000t - 45°)arrow_forward
- A varying current, with a periodic waveform, flows through an 8Ω resistor in accordancewith the following pattern:• For the first 0.04 second, it is constant at 6A;• For the next 0.02 second, it is zero• For the remaining 0.04 second, it is constant at 2A in the reverse directionDetermine: (i) the mean value (ii) RMS value (3) the heat dissipated in the resistor in 5 minutes.arrow_forwardIn a Negative going pulse waveform, the falling edge is the leading edge and the rising edge is the trailing edge. Select one: True Falsearrow_forwardFor the second and fourth resistor, does the alternation of each waveform synchronized (means that if the first wave is in its positive alternation, the second wave is also in its positive alternation)? please explainarrow_forward
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