Electronics-Resistance and Power
Electronics-Resistance and Power
21. If a variable resistor's resistance varies in a nonuniform manner as the shaft is moved, it is considered to be:
- linear
- defective
- not wirewound
- tapered
22. Power is measured in units of:
- joules x charge
- joules/work
- joules x voltage
- joules/time
24. With a complex circuit, a supply source senses:
- open circuit components
- when voltages need to be increased
- only a single resistive connection
- when complex currents are needed
25. Which is the most important step utilized when measuring resistors?
- use the highest possible scale
- keep test leads short
- zero the meter before using
- remove power from the circuit
26. Components designed to oppose the flow of current are called:
- insulators
- conductors
- resistors
- heat exchangers
27. How many amps are used by a 100 watt, 120 volt light bulb?
- 1.2 amps
- 12000 amps
- 830 mA
- 12 amps
28. Resistors are identified as to wattage by:
- size
- color code
- types of materials
- internal construction
29. What type of resistors have a tolerance rating of 5% or greater?
- precision
- SIP
- general-purpose
- wirewound
30. Resistor tolerance is either printed on the component, or is provided by:
- keyed containers
- size
- color code
- ohmmeter reading