Docsity
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Docsity AI
Docsity AI
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

TPC Basic Electricity & Electronics 100% passed exam, Exams of Electrical Engineering

Liberty University (LU)Electrical Engineering

TPC Basic Electricity & Electronics 100% passed exam

Typology: Exams

2023/2024

Available from 07/02/2024

studyroom
studyroom 🇺🇸

4.2

(5)

6.1K documents

1 / 5

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
TPC Basic Electricity & Electronics
100% passed exam
All modern electrical equipment is based on an understanding of the relationship
between _________
and _________. - electricity; magnetism
If a gap exists in an electric circuit, the circuit is said to be - open
Atomic particles that have a positive electrical charge are called - protons
Static electricity - does not move
You may find electricity easier to understand if you think of voltage as electrical -
pressure
Identical cells connected in __________ provide greater _________ than a single cell. -
parallel; current capacity
You must be careful when recharging lead-acid batteries because they - can explode
can throw acid around the area
produce flammable gases
"all of the above" ALL IS ANSWER
The negative plate in an electrochemical cell is called the - cathode
Which device for producing a potential difference consists of two different metals
welded together? - Thermocouple
An optoisolator receives a low-voltage signal on the LED side of the device and triggers
a device that
produces a ___________ voltage on the output side. - higher
The purpose of a potentiometer is to - divide a potential difference into two parts
Power is measured in - watts
Variable resistors in the range of ^1/_2 to 2 watts are called _____________, while
those in the range of
5 to 1000 watts are called _____________. - potentiometers; rheostats
If the fourth color band on a resistor is silver, the measured value of resistance is within
_________% of
the marked value - 10
pf3
pf4
pf5

Partial preview of the text

Download TPC Basic Electricity & Electronics 100% passed exam and more Exams Electrical Engineering in PDF only on Docsity!

TPC Basic Electricity & Electronics

100% passed exam

All modern electrical equipment is based on an understanding of the relationship between _________ and _________. - electricity; magnetism If a gap exists in an electric circuit, the circuit is said to be - open Atomic particles that have a positive electrical charge are called - protons Static electricity - does not move You may find electricity easier to understand if you think of voltage as electrical - pressure Identical cells connected in __________ provide greater _________ than a single cell. - parallel; current capacity You must be careful when recharging lead-acid batteries because they - can explode can throw acid around the area produce flammable gases "all of the above" ALL IS ANSWER The negative plate in an electrochemical cell is called the - cathode Which device for producing a potential difference consists of two different metals welded together? - Thermocouple An optoisolator receives a low-voltage signal on the LED side of the device and triggers a device that produces a ___________ voltage on the output side. - higher The purpose of a potentiometer is to - divide a potential difference into two parts Power is measured in - watts Variable resistors in the range of ^1/_2 to 2 watts are called _____________, while those in the range of 5 to 1000 watts are called _____________. - potentiometers; rheostats If the fourth color band on a resistor is silver, the measured value of resistance is within _________% of the marked value - 10

Which of the following diode operating specifications defines the maximum potential difference that can be applied across a diode in the reverse direction without destroying it? - Peak inverse voltage The center section of a transistor is - base A cathode has a ______________ charge. - negative In a vacuum tube, the anode is a - metal plate with a positive charge The maximum current that a semiconductor diode can conduct for part of an ac cycle is called the __________ current. - peak rectified In equations, L stands for inductance in henrys and C stands for capacitance in - farads What is the standard frequency of alternating current in the United States? - 60 Hz One complete cycle of alternating current is generated by a _________-degree rotation of a two-pole alternator. - 360 Power companies use _________ generators and transformers for cost-effective transmission over long distances. In contrast, _________ power cannot be transformed. - ac, dc If an ac circuit is purely resistive in nature, you can use __________ law exactly as you did in a dc circuit. - Ohm's If the potential difference across a resistor decreases to zero, the current - decreases to zero The purpose of a shunt in an ammeter is to - carry current around the meter movement One ampere equals one - coulomb per second Ohm's Law can be expressed mathematically as - E = I x R In the metric system, potential energy is measured in - joules A protective channel in which electrical conductors are enclosed is called a(n) - raceway Which of the following causes an increase in the resistance of a conductor? - An increase in length

Whenever two objects exert forces on each other from a distance without touching, you can describe the forces as - a field If you break a bar magnet, each part - becomes a complete magnet In an electromagnet, increasing the number of turns of wire in the coil _________ the magnetic field. - strengthens A measure of the ability to do work is known as - Power A thermocouple is and example of a device that uses _______________ to generate electricity. - Heat The Potential difference between two points is measured in. - Volts When trying to solve a series-parallel problem, you should - Divide the circuit into simpler parts If a circuit has two parallel paths, the larger fraction of the current follows the path that - Has the lower resistance Dielectric strength is measure of how much __________________ insulation can withstand without breaking down. - potential difference Base, _________________ and collector are the three parts of a transistor - emitter One complete cycle of alternating current is generated by a ___________________ - degree rotation of a two0pole alternator. - 360 The number of cycles completed every second is called the _____________________ of an ac circuit. - frequency the magnetic field produced by and electrically charged particle is strong when the particle is. - Moving rapidly Two unlike magnetic poles ___________________ each other. - attract Two object that both have positive electrical charges will _______________________ each other. - repel To avoid sparking when filling a tank truck, an electrical bond should be made between the ____________________ and the fill pipe, ______________________ the dome is opened. - Tank; Before

The JIC symbol displayed represents a(n) - rheostat In order to dissipate the heat of high current loads, a resistor must be physically - anchored large* protected small The high0resistance heating element in a electric heater is usually made of _____________ wire. - nichrome If capacitors are connected in parallel, their combined capacitance is _________ the sum of their individual capacitances. - equal to If a magnetic field exerts force on an object, the object has - magnetic properties In the equation PL = I2 x R, the "I" stands for the - current in amperes Wire size is often given in mils, a measurement equal to a - thousandth of an inch