100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
ABYC AEMC Chapter 3 Three Phase Exam Questions and Answers With Complete Solution CA$14.62   Add to cart
Quickly navigate to
Preview
  2.  
  3. ABYC AEMC Chapter 3 Three Phase
  4.  
  5. ABYC AEMC Chapter 3 Three Phase

Exam (elaborations)

ABYC AEMC Chapter 3 Three Phase Exam Questions and Answers With Complete Solution
 7 views  0 purchase
  • Course
  • ABYC AEMC Chapter 3 Three Phase
  • Institution
  • ABYC AEMC Chapter 3 Three Phase

In a delta configuration, the phase voltage is _____ the line voltage -ANSWER - equal to Three-phase power ______ than single-phase power -ANSWER - is more efficient Proper overcurrent protection for a three-phase motor requires -ANSWER - a triple-pole breaker Three-phase induction motors ...

[Show more]

Preview 2 out of 14  pages

Document information

  • March 14, 2024
  • 14
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • abyc aemc chapter 3 three phase exam questions an
  • abyc aemc chapter 3 three phase exam stuvia
  • compared to traditional us power sources de

Written for

  • ABYC AEMC Chapter 3 Three Phase
  • ABYC AEMC Chapter 3 Three Phase

Seller

avatar-seller
Topgrades20

Reviews received

Content preview

ABYC AEMC Chapter 3 Three Phase Exam Questions and Answers With Complete Solution
Compared to traditional US power sources, _____ delivers three times the power with only 1.5 times the conductor material. -ANSWER - three-phase power
In a delta configuration, the phase voltage is _____ the line voltage -ANSWER - equal to
Three-phase power ______ than single-phase power -ANSWER - is more efficient
Proper overcurrent protection for a three-phase motor requires -ANSWER - a triple-pole
breaker
Three-phase induction motors can be damaged by ____ in a three-phase power distribution system. -ANSWER - loss of voltage
In the SO-Hertz world, the Three-Phase _(___) configuration is by far the most frequently used. -ANSWER - wye
Three-Phase is a more efficient use of conductors. Given the same peak voltage between conductors and same current in each conductor, three-phase delivers three times the power with only ___ times the conductor material (three wires instead of two). -ANSWER - 1.5
Normally, the loads are unbalanced in a ______ configuration with a neutral cable connected at that center point where the three phases meet to supply the line to neutral loads. -ANSWER - wye(Y)
Notice that for 208-volt three-phase wye(Y), all three line conductors exhibit ___ volts to
neutral. -ANSWER - 120
The delta configuration has the three phases connected in a triangular configuration. They don't normally have a_______ cable. -ANSWER - neutral
In the delta configuration, the phase voltage is ___ to theline voltage. -ANSWER - equal
A wye configuration, the phase voltage is the _________ divided by root 3 (sqrt(3) = 1. 732). -ANSWER - line voltage A delta configuration does a great job at suppressing _____________, as well as maintaining balanced voltages when load currents are severely unbalanced while using only 3 wires -ANSWER - triplen harmonic magnetizing current
the. total VA rating of a Delta Transformer configuration gets reduced to____% of all 3 units, not 66.7% as intuition suggests. -ANSWER - 57.7
A Y configuration is ideal for connection to ____ ground because of the neutral point symmetry. -ANSWER - earth
Y also provides lower _________ stress, important for high voltages. -ANSWER - insulation
Delta is well suited for ___________ venues. -ANSWER - lower voltage high current
Delta systems are connected as ___________________ (that is, floating ground systems) where the power source and load connections are not referenced to ground. -
ANSWER - isolated ground systems
In a ________________________: phase current, line current, and load current are all the same in each phase. -ANSWER - wye source/load configuration
Line voltage is the voltage measured between any two _______ ________ in a three-
phase circuit. -ANSWER - line conductors
Phase current is the current through any___ component comprising a three-phase source or load. -ANSWER - one
In balanced wye circuits, line voltage is equal to phase voltage times the ____________
while line current is equal to phase current. -ANSWER - square root of 3, (1.732)
In a three-phase delta connection scheme, line voltage is equal to phase voltage but the
current supplied to or taken from each line conductor is 1. 732 times the current through
________. -ANSWER - each phase winding
Some examples of nonlinear loads that can generate _______ are inverters, battery chargers, and VFDs, as well as computers, PL Cs, refrigerators, TVs, and electronic light ballasts, and AC control circuits, to name a few. -ANSWER - harmonics
Current harmonics impact what is known as "power factor" _______. -ANSWER - negatively
Power factor is basically tee ratio between tbe average power of a _____ and tbe average power calculated for a pure resistive load witb equal voltage amplitude (AC peak voltage on the sine wave). -ANSWER - load

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 Topgrades20. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$14.62. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79271 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$14.62
  • (0)
  Add to cart