- Type
- Crossword Puzzle

Name the parts of a transformer connections polarity

neme the label nameplate

high voltage primary

low side secondaries

connection Tank ground

protection arrester

grounding copperrod

induction core

bushings coils

reverse flow backfeed

h1 primary bushing

120/240 low voltage

dual voltage tapchanger

high side tap duckbill

line tap stirrup

first conection made groundandnetruals

- Type
- Crossword Puzzle

process of generating an electric current from the motion of a conductor in a magnetic field induction

transforms mechanical energy into electrical energy generator

device that increases or decreases voltage is called transformer

What is produced when there us a current in the primary coil of a transformer? (two words) magnetic field

device used to measure small currents galvanometer

type of current the consists of charges that move back and forth in a circuit alternating

device that supples the mechanical energy to turn the armature of a generator turbine

a solenoid with a ferromagnetic core electromagnet

a coil of wore with a current solenoid

the two ends of a solenoid act like poles

What is used to turn the pointer of a galvanometer? (two words) electric current

transforms electric energy into mechanical energy (two words) electric motor

material that can be magnetized ferromagnet

form of energy consisting of changing electric and and magnetic fields electromagnetic

- Type
- Crossword Puzzle

results when electric currents and magnetic fields interact with each other electromagnetism

a coil of wire that carries an electric current, therefore produces a magnetic field solenoid

changes electrical energy into mechanical energy electric motor

wrapping a solenoid around an iron core electromagnet

cool cars... jk... induction to increase or decrease the voltage of alternating current transformers

induction to change mechanical energy into electrical energy electric generator

device that measures the strength and direction of an electric current in a wire galvanometer

a coil or loop of wire armature

magnetic resonance imaging MRI

electromagnets lift this off the tracks and move it forward maglev train

a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power battery

an attachment, connected to the armature of a motor or generator, through which electrical connection is made and which ensures that the current flows as direct current. commutator

a magnet that retains its magnetic properties in the absence of an inducing field or current permanent magnet

- Type
- Crossword Puzzle

Polygons having the same shape. Two polygons whose corresponding angles are congruent and the lengths of the corresponding sides are proportional. SIMILAR POLYGONS

Space occupied by a solid; measured in cubic inches. VOLUME

3-D figure with faces(sides) that are polygons. A solid figure with many plane faces, typically more than six. POLYHEDRON

Parts of congruent figures that match or are in the same places as each other. The parts (angles or sides) are in the same relative position in each of the figures. CORRESPONDING PARTS

Using properties of similar polygons to find lengths that are difficult to measure directly. A method of using proportions to find an unknown length or distance in similar figure. INDIRECT MEASUREMENT

Applying more than one transformation to an image. A transformation is put on the previous image several times. COMPOSITION OF TRANSFORMATIONS

Shapes that have the same shape but different sizes,~. Having corresponding sides proportional and corresponding angles equal. SIMILAR

A 3-D figure with all points the same distance from the center. A round solid figure, or its surface, with every point on its surface equidistant from its center. SPHERE

3-D figure with two parallel congruent circles. Connected by a curved circle. A solid geometric figure with straight parallel sides and a circular or oval cross section. CYLINDER

3-D figure with one circle base connected by a curved surface to a single vertex. A solid or hollow object that tapers from a circular or roughly circular base to a point. CONE

Objects made up of more than one solid. A solid that is composed, or made up of, two or more solids. COMPOSITE SOLIDS

Longest side of a right triangle; always across or opposite from right angle. HYPOTENUSE

Reversing the Pathagorean Theorem; Switching the hypotenuse and conclusion of a conditional statement. CONVERSE

Has three angles and three sides; has a sum of 180 degrees. TRIANGLE

Simply closed figure with three or more sides. POLYGON

Angles of a triangle that are not adjacent to a given exterior angle. REMOTE INTERIOR ANGLES

Operation that maps an original geometric figure to a now figure. A general term for four specific ways to change the shape on a graph. TRANSFORMATION

Fixed point or point that doesn't change in a rotation. POINT OF ROTATION

Intersecting line making a right angle. Two lines that meet a pet a right angle. PERPENDICULAR LINES

Outside the parallel's but opposite of the transversal; congruent. ALTERNATE EXTERIOR ANGLES

- Type
- Crossword Puzzle

A study of electric charges at rest. Electrostatics

This is a force that one echarge has on another. Electric Forces

Carries a positive charge Protons

Carries a negative charge Electrons

Pushes objects apart Repulsion

Pulls objects together Attraction

Metals are not _______. Insulators

Wood, rubber, and fabric are poor_________. Conductors

A material that can be both an insulator and a conductor. Semiconductor

This material can allow flow of electricity with no resistance. Superconductor

Rubbing your socks on the carpet is charging by ________ Friction

Charging of an object without direct touching. Induction

Allowing charges to move freely along a connection between a conductor and a ground. Grounding

Term applied to an atom or molecule in which the charges are aligned so that one side is slightly more positive or negative than the opposite side. Charge Polarization

Smallest particle of matter that still has all the properties of matter. Atoms

Something that is not moving is _______. Static

Standard unit of charge is a________. Coulomb

- Type
- Crossword Puzzle

A differential amplifier is a part of an Op-amp

In the common mode an identical signal appears in i/ps

The common-mode gain is very low

The differential gain is very high

If Vin is 0, Vo is zero

The use of negative feedback reduces the voltage gain

Negative feedback increases the Zin and B.W

A voltage follower has voltage gain of 1

Op-amp can amplify both a.c. and d.c.

The input offset current equals difference between base currents

The tail current in a differential amplifier equals sum of two emitter currents

A common-mode signal is applied to both iputs

The input stage of an Op-amp is usually a differential amplifier

Current cannot flow to ground through a virtual ground

emitter-follower has high Zin and low Zo

An ideal OPAMP has B.W infinite

In a nonlinear op-amp circuit Op amp may saturate

A digital-to-analog converter is an application of scaling adder

Ideal OPAMP is an voltage controlled voltage source

two i/p terminals of OPAMP is labelled as inverting & noninverting

Open loop gain of an amplifier can be represented by Vo/Vi

In op-amp signal applied at inverting terminal appears at output terminal with a phase 180

Another name for a unity gain amplifier is: voltage follower

If ground is applied to the (+) terminal of an inverting op-amp, the (–) terminal will: be virtual ground

The ratio between differential gain and common-mode gain is called common-mode rejection

The major difference between ground and virtual ground is that virtual ground is only a voltage reference

An ideal amplifier should have zero offset

- Type
- Crossword Puzzle

controls current flow switch

Transforms electrical energy into other types of energy Load

What part of a circuit is a battery? source

Multiple cells connected. Battery

Electrons move back and forth, changing direction. More efficient method of distributing electrical energy. Alternating current

Measured in Watts (W) power

How much useful energy an electrical device produces compared to amount that was supplied to the device. efficiency

Inefficient type of light bulb. incandescent

Loads connected in a row. series

Electrons can flow more thatn one direction in a circuit. parallel

Used to measure electric current. ammeter

A voltmeter is connected in _________________. parallel

A voltmeter is connected across a source or a ________________. load

Another term for voltage. Potential difference

Energy divided by charge. Voltage

As you increase the temperature of a wire, the resistance ____________. increases

As you increase the number of loads in parallel, the current drawn from the source _________________ increases

A circuit has 3 lamps connected in series. The total voltage of the circuit is nine volts. What is the voltage of lamp one? three volts

A renewable source of energy. wind

What is moving in a circuit? electrons

- Type
- Word Search

cohabitation

symmetrical family

instrumental role

expressive role

dysfunctional family

matriarchy

patriarchy

nuclear

dual burden

extended family

conjugal roles

death rate

birth rate

dark side

primary socialisation

family

beanpole

Lone-parent

- Type
- Crossword Puzzle

Cleaning Paste Flux

Wrench Adjustable spanner

Connects two pipes together Compressionfitting

Melts when heated Solder

Sleeve used when using plastic pipe insert

An easy way to cut copper pipe Pipeslice

Protects your head Hardhat

Connects two pipes together using heat solderedjoint

Part of a compression fitting Olive

Cold taps is fitted on the _____________hand side. Right

Who are we looking after when we fit taps correctly Blindpeople

When working who are we looking out for everyone

Used to protect our lungs Dustmask

Used to protect our feet steeltoecappedboots

- Type
- Crossword Puzzle

An object that attracts certain metals magnet

He discovered that a current carrying wire produces magnetism Oersted

He discovered Electromagnetic Induction Faraday

A region around a magnet where magnetic effects occur magnetic field

This happens when like poles of two magnets are near to one another repulsion

This happens when unlike poles of two magnets are near to one another attraction

Another name for wire conductor

Another name for magnetic materials ferromagnetic

This happens when voltage is induced due to a moving magnet through a coil or vice versa Electromagnetic Induction

An object that can detect magnetic field magnetic compass

An object that can detect small amount of current galvanometer

The part of a magnet where magnetic field is strongest poles

magnetic field direction north to south

an object with free electrons conductor

He invented the voltaic cells Volta

- Type
- Crossword Puzzle

A thin strip of land that connects large lands isthmus

land surrounded by water on 3 sides peninsula

a narrow strip of water that connects large waters strait

the mouth of a river with sand and mud delta

water and trees in the desert oasis

a branch of a river tributary

low area between hills and mountains valley

deep and narrow valley with water gorge

high, flat land plateau

a chain of islands archipelago