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

Author Question: When do normally open relay contacts close? A) They cannot close because they are open contacts. ... (Read 230 times)

s.tung

  • Hero Member
  • *****
  • Posts: 577
on: Jul 24, 2018
When do normally open relay contacts close?
 
  A) They cannot close because they are open contacts.
  B) When the relay coil is energized
  C) When the relay coil is de-energized
  D) When they receive power

Question 2

What power source does a heater normally operate on?
 
  A) 300 V to 400 V B) 208 V to 240 V C) 150 V to 250 V D) 200 V to 240 V


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dpost18

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

B


s.tung

  • Member
  • Posts: 577
Reply 2 on: Jul 24, 2018
:D TYSM

apple

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Open space is found in a Lodgepole pine stand after thinning. Open space is found in a Lodgepole pine stand after thinning.
Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ... Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ...
Hookup for testing fuel-pump current draw on any vehicle equipped with a fuel-pump relay. Hookup for testing fuel-pump current draw on any vehicle equipped with a fuel-pump relay.
The chart under the cover for the relay center indicates the location of the relay that controls ... The chart under the cover for the relay center indicates the location of the relay that controls ...
Closed and Open Food Product Dating Closed and Open Food Product Dating
An organizational specialist is hired as a consultant to a company planning to open a coffee ... An organizational specialist is hired as a consultant to a company planning to open a coffee ...
Video: HIV replication/ Replication cycle of HIV

For a complete list of videos, visit our video library