Exam (elaborations)
Midterm HVAC Electrical Questions Answered Correctly –| Latest Version 2024/2025
- Course
- Institution
Midterm HVAC Electrical Questions Answered Correctly –| Latest Version 2024/2025
[Show more]
Content preview
Midterm HVAC Electrical Questions Answered Correctly –|Latest Version 2024/2025
•
_____ are the particles that orbit the core of an atom - ANSWER electrons
______ is the force that pushes free electrons through conductors - ANSWER
voltage
name 3 terms meaning voltage - ANSWER electromotive force (emf) potential
difference and eletrical pressure
a device used to generate electricity is called a - ANSWER voltage source
name 6 voltage sources - ANSWER battery, generator, solar cell, thermocouple,
alternator, transformer secondary
is voltage current? - ANSWER no
electric current is ________ flowing through a conductor - ANSWER electrons
_______ is the measurement of current flow - ANSWER amperage
amperage tells the _____ of electrons moving thru a conductor - ANSWER amount
what device is used to check amperage? - ANSWER ammeter
conductors provide a ____ for current - ANSWER path
a circut with a complete path for current is said to have ________ - ANSWER
continuity
do wires have continuity? - ANSWER yes
_______ _______ reverses direction at regular intervals - ANSWER alternating
current
current alternates (reverses direction) two times every _____ - ANSWER cycle
, ac in the usa flows at 60 cycles per _____ , which means the same as 60 _____ -
ANSWER seconds, hertz
__________ is the opposition to current flow - ANSWER resistance
resistance reduces the ______of electrons flowing thru a circuit - ANSWER
amount
amperage will be high through a circuit that has ___ resistance - ANSWER low
name 2 types of resistance - ANSWER resistive, reactive
counter e.m.f. is a type of _______ resistance - ANSWER reactive
counter e.m.f. is produced by ________ in motion - ANSWER magnetism
name 5 factors that affect the resistance of a device - ANSWER material length
girth temperature and magnetism in motion
the resistance of an open circuit will be _______ ohms - ANSWER infinite
the resistance across a closed switch or wite should be ____ ohms - ANSWER
zero
all loads have __________ - ANSWER resistance
name 6 loads - ANSWER lamp heater motor relay coul solenoid coul transformer
primary
resistive loads generate ____ and or _____ - ANSWER heat , light
inductive loads generate ___________ - ANSWER electromagnetism
name 4 inducitve loads - ANSWER motor relay coil solenoid coil transformer
primary
ohms law states 1____ will push 1 ___ through 1 ___ - ANSWER volt, amp, ohm
ohms law formula is - ANSWER e = i x R
if resistance does not change and voltage increases amperage will ______ -
ANSWER increase
if resistance does not change and voltage doubles amperage would ______ -
ANSWER double
if voltage does not change and resistance decreases amperage will _______ -
ANSWER increase
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Americannursingaassociation. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83100 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now