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
IEC Year 2 Semester 2 Questions And Answers Graded A+. $12.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. IEC
  4.  
  5. IEC

Exam (elaborations)

IEC Year 2 Semester 2 Questions And Answers Graded A+.
 0 purchase
  • Course
  • IEC
  • Institution
  • IEC

________________________________________ IEC Year 2 Semester 2 Questions And Answers Graded A+. In a 60 Hertz system, the voltage will go to "0" ___ times per second? - correct answer. D. 120 What type of magnet is used for the coil in a relay? - correct answer. C. electromag...

[Show more]

Preview 4 out of 44  pages

Document information

  • September 19, 2024
  • 44
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • iec year 2 semester 2 questions and answers grade

Written for

  • IEC
  • IEC

Seller

avatar-seller
techgrades

Reviews received

Content preview

IEC Year 2 Semester 2 Questions And
Answers Graded A+.

In a 60 Hertz system, the voltage will go to "0" ___ times per second? - correct answer.
D.
120

What type of magnet is used for the coil in a relay? - correct answer. C.
electromagnet

___ flow equals current flow. - correct answer. C.
Electron

______ law states "charged bodies attract or repel each other with a force that is
directly proportional to the product of the charges and inversely proportional to the
square of the distance between them." - correct answer. D.
Coulomb's

If the RMS value is 125 volts, what is the peak value? - correct answer. D.
176.75

If the RMS value is 125 volts, what is the peak value? - correct answer. D.
176.75

Which of the symbols, shown below, is used to represent an inductor in a schematic
circuit? - correct answer. C.

Electrical current is the flow of ___. - correct answer. B.
electrons

Which of the formulas, shown below, is correct to find the total of three capacitors in a
series circuit? - correct answer. B.

,Which of the formulas, shown below, is correct to find the equivalent of three inductors
in a parallel circuit? - correct answer. A.

As current flow through a conductor increases, the magnetic field strength ___. - correct
answer. C.
increases

Current flow through a conductor creates a magnetic field around the conductor. -
correct answer. B.
True

A change in the magnetic field surrounding the conductor induces a voltage in the
conductor. This induced voltage is known as ___. - correct answer. B.
Counter EMF

A ___ is a device that converts electrical energy into a linear force. - correct answer.
D.
solenoid

A ___ is a device that attracts iron and steel because of the molecular alignment of its
material. - correct answer. D.
magnet

Nonferrous materials, such as copper, ___ attracted by the magnetic field around a
magnet. - correct answer. B.
are not

Permanent magnets are used in the construction of ___ motors.I. AC II. DC - correct
answer. D.
II only

The invisible magnetic lines that leave the north pole and enter the south pole of a
magnet are ___. - correct answer. A.
lines of flux

Two unlike poles of magnets brought together cause the magnets to ___ each other. -
correct answer. C.
attract

The basic law of magnetism states that unlike poles (south and north, for example) ___
each other. - correct answer. A.
attract

As two magnetic poles of the same polarity get closer together the force of ___ gets
stronger. - correct answer. B.

,repulsion

If the current flowing through a coil of wire is increased, the magnetic field strength ___.
- correct answer. C.
also increases

A coil of wire, when carrying current, acts like a ___. - correct answer. B.
magnet

A coil of wire wrapped around an iron core is a(n) ___ when it carries current. - correct
answer. D.
electromagnet

The strength of the magnetic field around a coil (or winding) ___ when AC voltage is
applied. - correct answer. B.
varies

The strength of the magnetic field around a coil (or winding) ___ when DC voltage is
applied. - correct answer. A.
is constant

Motors, circuit breakers, contactors, relays, and motor starters all use ___ principles. -
correct answer. C.
electromagnetic

When AC current passes through a circuit conductor or a connected load, it creates ___
that creates (or induces) a voltage in the circuit that actually opposes the applied
voltage. - correct answer. D.
a magnetic field

When current passes through a conductor, a magnetic field is created around the
conductor. When individual circuit conductors are either in close proximity (in wireways,
trenches, cable trays, etc) or contained in the same cable or conduit, these magnetic
fields cancel each other because the currents in each conductor are not in phase with
each other. - correct answer. A.
True

The term gigahertz means ___ per second. - correct answer. C.
billion cycles

___ when current flows in a conductor. - correct answer. C.
both a and b

A charged body is surrounded by ___. - correct answer. A.
a magnetic field

, ___ loss is loss caused by the induced currents that are produced in metal parts that
are being magnetized. - correct answer. D.
Eddy current

To an electrician the drawing at the right represents ___. - correct answer. C.
a sine wave

Where operating in the United States, AC voltage reaches a positive peak ___ times
during 1 second. - correct answer. E.
60

One AC voltage cycle is completed in ___ degrees. - correct answer. D.
360

___ current constantly changes direction of flow and magnitude as it completes the
circuit from a power source to a load and then back to the power source. - correct
answer. A.
AC

The vertical axis on a voltage sine wave, generated from an AC generator, represents
___. - correct answer. D.
voltage

The horizontal axis on a voltage sine wave, generated from an AC generator,
represents ___. - correct answer. C.
time

Each phase of three-phase AC power is offset by ___ degrees. - correct answer. D.
120

___ is the output of an AC generator measured in cycles per second. - correct answer.
B.
Frequency

An AC generator produces ___ cycle(s) per revolution for each pair of poles. - correct
answer. D.
one

The peak-to-peak value of a sine wave is ___ the maximum positive peak value. -
correct answer. A.
twice

RMS is an abbreviation for ___. - correct answer. C.
Root Mean Square

Which of the conversion formulas listed below is correct? - correct answer. C.

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 techgrades. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

64670 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling

Recently viewed by you

Exam (elaborations) ·

(0)

Leasing Agent Exam Questions With 100% Correct Answers

Exam (elaborations) ·

(0)

CNUR 301 Final Exam Questions and Answers All Correct

Exam (elaborations) ·

(0)

OCR B Geography GCSE Resource Reliance questions & answers

Exam (elaborations) ·

(0)

Montgomery Police Academy Legal Exam Study Guide -2023

Exam (elaborations) ·

(0)

Fitness Professional's Handbook 7th Edition Howley Test Bank

Exam (elaborations) ·

(0)

Prometric CNA Test exam 2023 with 100% correct answers

Exam (elaborations) ·

(2)

GRADE 9 Essay on Eva Smith in An Inspector Calls GCSE!

Exam (elaborations) ·

(0)

COMPTIA NETWORK+ N10-007 FINAL EXAM QUESTIONS AND ANSWERS #14

Exam (elaborations) ·

(0)

NUR 301 NCLEX Challenge 8- University of South Alabama
$12.49
  • (0)
Add to cart
Added