⚡Electrical Engineering MCQs
Electrical Engineering MCQs
499 MCQs401
A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is____________?
A1,403 Ω
B4.7 kΩ
C2 kΩ
D3,403 Ω
402
A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?
A24 Ω
B2.4 Ω
C300 Ω
D3,000 Ω
403
A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately___________?
A14 mA
B1.4 mA
C5 mA
D50 mA
404
A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is______________?
A12 V
B24 V
C0 V
D6 V
405
A.C cannot be used for________________?
Aproducing heat
Bproducing light
Cmagnetizing and electroplating
Dall the above
406
Which one of the following functions like a motor ?
Agalvanometer
Bammeter
Cvoltmeter
Dall of above
407
An alternating current or voltage________________?
Afluctuates off and on
Bvaries in magnitude alone
Cchanges its direction again and again
Dchanges its magnitude continuously and reverses its direction of flow after regularly recurring intervals.
408
A certain voltage divider consists of two 12 kΩ resistors in series. Which of the following load resistors will have the most effect on the output voltage?
A1 MΩ
B24 kΩ
C18 kΩ
D12 kΩ
409
The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is___________?
A1,650 Ω
B1,078 Ω
C77.8 Ω
D778 Ω
410
The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 KΩ resistor is__________?
A25 %
B20 %
C100 %
D50 %