« 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 82 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?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Cyanide works by making the human body unable to use oxygen.

This modified model of Easton’s systems theory puts government decision makers as the source of pol This modified model of Easton’s systems theory puts government decision makers as the source of pol
Romanian Adoptees’ Cognitive Abilities, by Age of Adoption The later the age of adoption, the lower Romanian Adoptees’ Cognitive Abilities, by Age of Adoption The later the age of adoption, the lower
Adding additional amounts of ethyl alcohol (ethanol) increases the frequency reading. Adding additional amounts of ethyl alcohol (ethanol) increases the frequency reading.
Voltmeter hook-ups for voltage-drop testing of a GM-type cranking circuit. Voltmeter hook-ups for voltage-drop testing of a GM-type cranking circuit.
Dried fruits are good source of sulfur Dried fruits are good source of sulfur
How much voltage does the resistor drop in Figure 10-2? How much voltage does the resistor drop in Figure 10-2?
Video: Ciliate conjugation Animation

For a complete list of videos, visit our video library