How well do you understand the design, building and maintenance of electrical control systems, machinery and equipment? Test your knowledge and prepare for your exams with these Electrical Engineering questions and answers.
The maximum resistance value for a brown, red, yellow, gold resistor is
126,000 Ω
126,600 Ω
114,000 Ω
132,000 Ω
Correct answer is A
No explanation has been provided for this answer.
The minimum resistance value for a blue, gray, red, silver resistor is
612 Ω
6,120 Ω
6,800 Ω
6,460 Ω
Correct answer is B
Because of 10% tolerance(last color silver), this resistance may vary 10% of 6800.
Minimum resistance value = 6800 - 680 = 6120
Maximum resistance value = 6800 + 680 = 7480
Current flows in a circuit when
a switch is opened
a switch is closed
the switch is either open or closed
there is no voltage
Correct answer is B
No explanation has been provided for this answer.
The unit of electrical charge is the
coulomb
joule
volt
watt
Correct answer is A
No explanation has been provided for this answer.
Materials with lots of free electrons are called
conductors
insulators
semi-conductors
filters
Correct answer is A
No explanation has been provided for this answer.