Unit 5 Quiz

What does the fourth band of color on a resistor indicate?

Tolerance

A _____ resistor is made by applying a film of carbon to a ceramic rod.

Carbon film

A _____ resistor is made from a compound of carbon graphite and resin bonding material.

Composition carbon

A _____ resistor is made by applying a film of metal to a ceramic rod in a vacuum.

Metal Film

A _____ resistor is made by combining metal with glass and then applying it to a ceramic base as a thick film.

Metal glaze

A _____ resistor operates by moving the wiper arm with a screw of some number of turns.

Multiturn variable

The _____ of a resistor indicates the plus and minus limits of a resistor's ohmic value.

Tolerance

A resistor has color bands of brown, black, red, and silver. What is the resistance and tolerance of the resistor?

1000 Ω, 10%

A resistor has color bands of red, violet, brown, and gold. What is the resistance and tolerance of the resistor?

270 Ω, 5%

Resistors that only have one ohmic value are called _____ resistors.

Fixed

Wire-wound resistors are often used because they are able to operate at _____ power levels than other resistors.

Higher

A variable resistor is also called a _____.

Potentiometer

A variable resistor with three terminals is called a _____.

Potentiometer

A variable resistor with two terminals is called a _____.

Rheostat

In a(n) _____ circuit, there is very little resistance and a large amount of current flows.

Short

_____ were used in vacuum-tube circuits many years ago and are still used today in applications involving field-effect transistors (FETs) and multirange voltmeter circuits.

Voltage dividers

A _____ resistor is made by winding a piece of resistive wire around a ceramic core.

Wire-wound

A resistor whose values can be varied over a range of values is called a _____ resistor.

Variable