« previous next »

Author Question: An AC voltage source has an amplitude of 96. V and frequency 400. Hz. The voltage was zero at t = 0 ... (Read 98 times)

mcmcdaniel

  • Hero Member
  • *****
  • Posts: 550
on: Jul 27, 2018
An AC voltage source has an amplitude of 96. V and frequency 400. Hz. The voltage was zero at t = 0 and was increasing.
 
  (a) What is the effective rms voltage?
  (b) What is the instantaneous voltage at 1.00 ms?
  (c) When will the voltage be 40. V?

Question 2

A platinum wire is used to determine the melting point of indium. The resistance of the platinum wire is 2.000  at 20C and increases to 3.072  as indium starts to melt.
 
  What is the melting point of indium? (The temperature coefficient of resistivity for platinum is 3.9  10-3/C.) A) 117C
  B) 137C
  C) 157C
  D) 235C
  E) 351C


mammy1697

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 68. V
(b) 56. V
(c) 0.17 ms

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Organisms can be classified according to their source of energy Organisms can be classified according to their source of energy
The greatest bone mass is found around age 30 for both men and women, with the later decline being f The greatest bone mass is found around age 30 for both men and women, with the later decline being f
In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through
Drug Action Through Channels, via Voltage Changes or Chemicals Drug Action Through Channels, via Voltage Changes or Chemicals
What is the minimal voltage required? What is the minimal voltage required?
The consequences of the intensity of natural selection on allele frequency. The consequences of the intensity of natural selection on allele frequency.
Video: Structures that affect circulation - kidneys and blood volume and skeletal muscle pumping

For a complete list of videos, visit our video library