This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Where does the current come from that moves the needle on an analog volt meter? A) The volt meter ... (Read 54 times)

bobbysung

  • Hero Member
  • *****
  • Posts: 519
on: Jul 26, 2018
Where does the current come from that moves the needle on an analog volt meter?
 
  A) The volt meter uses induction to produce a small electric current using the magnetic field surrounding the wire it is testing.
  B) The battery inside the meter
  C) No current is required to move the needle on an analog volt meter.
  D) The meter uses a small amount of current from the circuit it is testing.

Question 2

Why are piercing valves used in refrigerant work?
 
  A) To access a sealed system B) To allow a constant evacuation
  C) To install a gauge manifold set D) To remove a process tube


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 26, 2018
Answer to Question 1

D

Answer to Question 2

A


bobbysung

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jul 26, 2018
TY


nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Reply #3 on: Jul 26, 2018
You're welcome


« previous next »
 

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Respiratory Assistive Devices, Patient Using a Peak Flow Meter Respiratory Assistive Devices, Patient Using a Peak Flow Meter
Concentric double-pipe heat exchanger for co-current flow Concentric double-pipe heat exchanger for co-current flow
Current FDA Pregnancy Category Ratings with Examples Current FDA Pregnancy Category Ratings with Examples
A typical 12 volt test light. A typical 12 volt test light.
Set the meter to read ohms (V) and measure the resistance of the relay coil. The usual reading for ... Set the meter to read ohms (V) and measure the resistance of the relay coil. The usual reading for ...
Bug depositing fertilized eggs on a pine needle Bug depositing fertilized eggs on a pine needle
Video: Carbohydrate digestion - mouth and stomach & pancreas and small intestine

For a complete list of videos, visit our video library