DC - Unit 5 Practice Test

A resistor whose values can be varied over a range of values is called a _____ resistor. a. fixed b. carbon c. wire wound d. variable

variable

A resistor has color bands of red, violet, brown, and gold. What is the resistance and tolerance of the resistor? a. 270 W, 10% b. 270 W, 5% c. 2700 W, 5% d. 2700 W, 10%

270 W, 5%

_____ 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. a. Current dividers b. Voltage dividers c. Current multipliers d. Voltage multipliers

Voltage dividers

A _____ resistor is made by applying a film of carbon to a ceramic rod. a. wire-wound b. carbon film c. metal glaze d. metal film

carbon film

A _____ resistor is made from a compound of carbon graphite and resin bonding material. a. metal film b. composition carbon c. metal glaze d. wire-wound

composition carbon

Resistors that only have one ohmic value are called _____ resistors. a. composition b. fixed c. metal film d. variable

fixed

Wire-wound resistors are often used because they are able to operate at _____ power levels than other resistors. a. more efficient b. lower c. the same d. higher

higher

A _____ resistor is made by applying a film of metal to a ceramic rod in a vacuum. a. wire-wound b. metal film c. composition carbon d. metal glaze

metal film

A _____ resistor is made by combining metal with glass and then applying it to a ceramic base as a thick film. a. metal glaze b. metal film c. carbon film d. wire-wound

metal glaze

A _____ resistor operates by moving the wiper arm with a screw of some number of turns. a. wire-wound b. pot c. multiturn variable d. rheostat

multiturn variable

A variable resistor is also called a _____. a. wire wound resistor b. potentiometer c. metal film resistor d. multiturn resistor

potentiometer

A variable resistor with three terminals is called a _____. a. multiturn resistor b. wire wound resistor c. potentiometer d. rheostat

potentiometer

A variable resistor with two terminals is called a _____. a. wire wound resistor b. multiturn resistor c. rheostat d. potentiometer

rheostat

In a(n) _____ circuit, there is very little resistance and a large amount of current flows. a. short b. openx c. long d. closed

short

The _____ of a resistor indicates the plus and minus limits of a resistor's ohmic value. a. tolerance b. coefficient c. wattage d. resistance

tolerance

A _____ resistor is made by winding a piece of resistive wire around a ceramic core. a. metal film b. metal glaze c. wire-wound d. carbon film

wire-wound

A resistor has color bands of brown, black, red, and silver. What is the resistance and tolerance of the resistor? a. 100 W, 10% b. 1000 W, 10% c. 1000 W, 5% d. 100 W, 5%

1000 W, 10%

What does the fourth band of color on a resistor indicate? a. number values b. tolerance c. multiplier d. divider

tolerance