What device may be used to ensure that air is flowing through a duct before an electric strip is energized

Answers

Answer 1

Answer:

Most commonly used air flow proving interlocks are:

differential pressure air flow switch.  Contact changes state based on duct static vs. atmosphere outside the duct or dp across a fan inlet to outletCT relay.  Current transformer relay that changes state from 0 to 1 open/closed when amp draw on a blower motor exceeds the trip setpoint.

Explanation:


Related Questions

Linus is using a calculator to multiply 5,426 and 30. He enters 5,426 x 300 by mistake. What can Linus do to correct his mistake?

Answers

Answer:

Linus needs to take one of the zero out and it should be 30 instead 300.

Explanation:

It is because Linus put three zero instead two zero.

What is the probability that Tina will NOT wear a white t-shirt on the first day of her trip?

Answers

Answer:

4/5

Explanation:

She is not wearing white t-shirt on the first day so she is wearing the other 4 t-shirt

Which job sector is least likely to create new and emerging jobs in the greening economy?
O Energy Efficiency
O Green Construction
Research, Design, and Consulting Services
Energy Trading

Answers

Answer:

The job sector least likely to create new and emerging jobs in the greening economy is;

Energy Trading

Explanation:

The Energy Trading job sector which is the fast paced job sector that includes the buying and selling of energy  in the form of electricity, natural and oil as well as the transfer of energy to the end users. An energy trader can also be a dealer in the shares of energy production companies

Therefore, an energy trader that sells oil in a decade can adapt in the following decade by the use of computing tools to the sale of energy produced from renewable sources by energy companies such that there is no requirement for the development of new skill set which leads to fewer new and emerging jobs in the energy trading sector of the greening economy

why are funeral home adding dining facilities to the business

Answers

Because they think it will make them more money

Read the excerpt from The Diary of Anne Frank.

Mr. Frank. First let us take off some of these clothes. (They all start to take off garment after garment. On each of their coats, sweaters, blouses, suits, dresses, is another yellow Star of David. Mr. and Mrs. Frank are underdressed quite simply. The others wear several things, sweaters, extra dresses, bathrobes, aprons, nightgowns, etc.)

Why did Anne and her sister most likely wear so many layers of clothing?

They were worried about being cold during the walk.
They were bringing extra garments for the Van Daan family.
They could bring into hiding only what they could carry.
They did not want to leave anything behind that could get stolen.

Answers

Biología: 7.50/10
•nos dio una banda de quizes con banda de preguntas
•nos dio una locura de tarea:(
• no jodio tanto con la cámara
•no tenemos q volver desp del lunch:)
•bastante tranqui

Answer:

b

Explanation:

I’ve got such bad cramps and feel so moody

Answers

Answer:

hope u feel better

Explanation:

Which step in the engineering design phase is requiring concussion prevention from blows up to 40 mph an example of?


target your customers

list the product goals

describe a product output

determine criteria and constraints

Answers

Answer:

Target your customers

Explanation:

took the test :)

Systems engineers began as a field for which reason?

To aid with large-scaled defense systems in the 1950s.

To facilitate space travel in the 1960s.

To discover new sources of fuel in the 1970s.

To respond to the growth of computer technology in the 1980s.

Answers

Answer:

To discover new soutces of fuel in the 1970s

Mark me

I NEED HELP NOW!!!!!!!!!!!!!!

Answers

Answer:

S or the 4th option

Explanation:

THIS IS SO EASY

Answer:

S

Explanation:

if you took a wedged makeup sponge it would fit right there

Which of the following is a variable expense for many adults?

Answers

But where are the options?
Ans: Their monthly rent payment.

Safety-in engineering as with everything else is all about trying to maximize or create the hazards involved with what you are doing.


A. True

B. False

Answers

Answer:

False?

Explanation:

This is an odd question, but it sounds like it would be part of a safety quiz.

Basically stating that "safety is all about trying to create hazards"

which would be False.

I believe the answer is False

Which of the following statements about PAC storage and housekeeping is correct? (Welding)

A.Cylinder caps must be in place before moving any gas cylinders.
B.Leave regulators attached to any gas cylinder.
C.The compressed air line is normally left connected.
D.The power source cable must remain plugged in at all times.

Answers

The answer would be C.the compressed air line is normally left connected

How are the particles moving and and arranged in a gas?

Answers

Answer:

The particles in gas do not have any particular arrangement and there are very, very weak forces between them. So, the particles in a gas can easily move around and fill the shape of the container they are in, meaning they have no fixed shape.

Automotive class

A-
Resistance goes down when more parallel pants are added

B-
The sum of the voltage drops across individual resistors is equal to the supply voltage

C-
Current flow from individual legs add up in parallel

D-
Voltage stays the same at all common parallel circuit inputs

Answers

Answer:

what  are you in

Explanation:

A clutch is being replaced on a vehicle. Technician A says the flywheel should be replaced or resurfaced. Technician B says that the bearings should be cleaned and reinstalled if ok. Who is correct?

Answers

Explanation:

resurfacing would only cause slipage on the pressure plate resurfacing could cause problems

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