« 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 88 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?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

The proportion of men and women with elevated blood pressure or taking hypertension medication incre The proportion of men and women with elevated blood pressure or taking hypertension medication incre
A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there
Cover heat source to slow cooling by placing a towel over it. Cover heat source to slow cooling by placing a towel over it.
Remove cold source, and check the knee for changes. Notice skin color and changes in swelling around ... Remove cold source, and check the knee for changes. Notice skin color and changes in swelling around ...
If the period of a square wave is 22 ms, what is its frequency? If the period of a square wave is 22 ms, what is its frequency?
Classes and Frequency of Breast Cancer Susceptibility Genes Classes and Frequency of Breast Cancer Susceptibility Genes
Video: Simple Diffusion - gases and nonpolar compounds transport

For a complete list of videos, visit our video library