Resistors

What type of fixed resistor is made from a compound of Carbon graphite and resin bonding material?

Composition Carbon

How is resistance determined for metal film resistors

by type of metal used to form the film

What color used as the multiplier band means to divid the combined first two numbers by 10?

Gold band

For most electrical circuits, the voltage level may very how much from the rated value

1%

What is the voltage test range of most Megohmmeters?

50V to 5000V

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

A variable resistor

Why are metal film resistors better than carbon resisors

Because their value doesn't change with age and their tolerance is better

What is most common type fixed resistor?

Composition carbon

What type resistor can only have one ohmic value?

fixed

The voltage is a series circuit?

is divided across the circuit. All used

A potentiometer is a:

variable resistor

Why use carbon film resistors?

Less expensive to make and can have a higher tolerance rating than composition carbon

What type of fixed resistor is made by applying a film of metal to a ceramic rod in a vacuum?

Metal film

What type of fixed resistor is made by combining metal with glass and then applying it to a ceramic base as a thick film?

Metal glaze

How should Tubular wire-wound resistors be mounted? Why?

Mounted vertically because it increases airflow and heat dissipates at a faster rate

What type of resistor operates by moving a wiper arm with a screw of some number of turns?

Multiturn variable. Generally 3 to 10 turns

What is another term for a variable resistor?

Potentiometer

The resistance of wire wound resistors is determined by:

The type material used to make it, the diameter of the wire and the length of the wire

The--- of a resistor indicates the plus and minus limits of a resistors ohmic value

Tolerance

What is indicated by the fourth color band on a resistor?

Tolerance

Which fixed resistor can operate at higher temperature than the others?

Wire-Wound

What type resistors are generally used when a high power rating is needed?

Wire-wound

A variable resistor with two terminals is called

a Rheostat

The voltage in a parallel circuit?

stay the same

What are variable resistors used for?

to adjust the current in a circuit to a certain value

The three types of fixed resistors are:

Composition carbon, Metal film and Wire wound