Calculate value of A (coefficient in v(t)) in voltage gen.

  • Thread starter Thread starter anol1258
  • Start date Start date
  • Tags Tags
    Value Voltage
Click For Summary

Discussion Overview

The discussion revolves around calculating the value of A, a coefficient in the voltage function v(t) of an ideal voltage generator, given the expression v(t)=|A+BAcos(377t)|. The context includes considerations about the type of voltmeter used in the measurement process.

Discussion Character

  • Homework-related, Technical explanation, Conceptual clarification

Main Points Raised

  • Posters inquire about the type of voltmeter connected to the generator, questioning whether it is DC, AC, or phase-angle specific.
  • Some participants suggest that the voltmeter is likely AC, although this is not explicitly stated in the problem.
  • There is a discussion about whether the voltmeter is calibrated for sinusoidal inputs or RMS AC, indicating that this detail is crucial for further calculations.
  • One participant proposes that the voltmeter is calibrated for sinusoidal inputs and describes a scenario where the meter reads only positive voltages, filtering the signal before measurement.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the type of voltmeter or its calibration, indicating multiple competing views and unresolved questions about these aspects.

Contextual Notes

The discussion highlights the importance of the voltmeter's specifications, such as its calibration and type, which are not provided in the original problem statement. This lack of information affects the ability to calculate A accurately.

anol1258
Messages
26
Reaction score
0

Homework Statement



Consider an ideal voltage generator. If an ideal voltmeter is connected to the generator calculate the value of A (coefficient in v(t))

given:

v(t)=|A+BAcos(377t)|

V given
 
Physics news on Phys.org
what kind of voltmeter? DC? AC? Phase-angle?
 
Hmmm it isn't specified but I'm guessing the voltmeter is AC.
 
If it's AC, is it calibrated for sinusoidal inputs, or rms AC, or ??

This question needs an answer in order to proceed.
 
I believe it is calibrated for sinusoidal inputs.
 
anol1258 said:
I believe it is calibrated for sinusoidal inputs.

So assume a meter that reads only + voltages (it reads negative voltages as zero), then passes the voltage thru a low-pass filter of appropriate gain, and then into a dc voltmeter.
 

Similar threads

Wrong value for the voltage across a capacitor
  • · Replies 2 ·
Replies
2
Views
2K
How to determine drain-source voltage for this MOSFET amplifier.
  • · Replies 0 ·
Replies
0
Views
2K
Engineering Question - Calculating Coefficients for 2nd Order Transient Analysis
  • · Replies 2 ·
Replies
2
Views
1K
Engineering Calculating the unknown voltages in ideal op-amp circuits
  • · Replies 13 ·
Replies
13
Views
3K
AC - Node Voltage Method for difficult circuit
  • · Replies 4 ·
Replies
4
Views
2K
Engineering Calculating the voltage at a certain Resistor
  • · Replies 3 ·
Replies
3
Views
2K
Engineering Calculating Voltage Drop Across Non-Ideal Diodes
  • · Replies 20 ·
Replies
20
Views
5K
Simple phase relationship (current & voltage)
  • · Replies 8 ·
Replies
8
Views
8K
Voltage Calculation: What Are the Necessary Values?
  • · Replies 6 ·
Replies
6
Views
1K
How do I find voltage at time t given a voltage phasor?
  • · Replies 10 ·
Replies
10
Views
2K