« previous next »

Author Question: An oscillator that uses a transformer to achieve the 180 voltage phase shift required for ... (Read 91 times)

cool

  • Hero Member
  • *****
  • Posts: 570
on: Jul 28, 2018
An oscillator that uses a transformer to achieve the 180 voltage phase shift required for oscillation is known as a
 
  A) Hartley oscillator B) Wien-bridge oscillator
  C) Colpitts oscillator D) Armstrong oscillator

Question 2

When current is applied to the coil of an NC relay,
 
  A) it opens. B) it closes.
  C) its contacts touch. D) it opens and its contacts touch.


Kdiggy

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Carbon Dioxide Phase Diagram Carbon Dioxide Phase Diagram
Masters and Johnson’s Four-Phase Model of the Sexual Response Cycle Masters and Johnson’s Four-Phase Model of the Sexual Response Cycle
Voltmeter showing the battery voltage when the headlights were on (engine off) for one minute. Voltmeter showing the battery voltage when the headlights were on (engine off) for one minute.
Voltmeter hook-ups for voltage-drop testing of a Ford-type cranking circuit. Voltmeter hook-ups for voltage-drop testing of a Ford-type cranking circuit.
Sexual Phase of the Fungal Life Cycle Sexual Phase of the Fungal Life Cycle
Video: Structures that affect circulation - arterioles and vasomotor responses

For a complete list of videos, visit our video library