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Worksheets基本電學第一章(電阻種類及特性)
Total questions: 15
Worksheet time: 9mins
A resistor has the colors red, orange, blue, and silver. What is the value?
23k ohms
23M ohms
2.3k ohms
2.3M ohms
A color toleranced band silver band indicates.................
5% tolerance
10% tolerance
20% tolerance
none of above
The resistors third color band represents....................
amplitude
tolerance
multiplier of 10
none of above
The resistors forth color band represents....................
amplitude
multiplier of 10
tolerance
none of above
Sorting the resistance 47K Ω ±5% of this resistor
What is the resistance of this resistor?
10k Ω
1k Ω
100k Ω
none of above
Q.
Potetiometer is the example of _______ type resistor.
Fixed
Variable
Both
None of the Above
Resistors can be divided into 2 broad categories. They are:
big and small resistors
round and square resistors
fixed and variable resistors
black and white resistors
The ___ resistor is the most frequently used type of resistor.
wire wound
metal film
chip resistors
carbon composition
The 3 basic types of FIXED resistors, based on their construction are:
Carbon composition, film and rheostats
Carbon composition, film and wire wound
Carbon composition, film and potentiometers
Carbon composition, wire wound and rheostats
What is the advantage of a wire wound resistor?
They are inexpensive
They can operate at higher temperatures
They have fixed values
They do not require a large amount of space for mounting.
Identify the following electrical circuit symbol?
Variable Resistor
Fixed Resistor
Fuse
Thermistor
The purpose of a rheostat is:
Increase the magnitude of current only
Decrease the magnitude of current only
Increase or decrease the magnitude of current
None of these
How does a rheostat work?
It changes the voltage in the circuit.
by adding more components into the circuit
It adds more power to the circuit.
by changing how much wire the electricity has to go through.
What is a rheostat good for?
controlling temperature in a home
lowering voltage by changing resistance
reading water pressure
measuring electricity usage
