Final Exam
Electricity and Circuits Final Exam
Test your knowledge on electricity, circuits, and motors with our comprehensive final exam. This quiz consists of 36 questions designed to assess your understanding of electrical concepts, components, and their applications.
Key Features:
- Multiple choice questions
- Focus on practical electrical knowledge
- Instant feedback on your answers
1) A material through which electric current CANNOT pass easily is a/an
A. Tester
B. Insulator
C. Receptor
D. Conductor
2) A material through which electric current CAN pass easily in a/an
A. Tester
B. Insulator
C. Receptor
D. Conductor
3) phenomenon of that a wire becomes hot and produces light when an electric current passes might caused by
A. Circuit
B. Short circuit
C. Open Circuit
All the above
4) In order for a circuit to work, the path must be
A. Series
B. Parallel
C. Closed
D. Opened
5) A/An _____________________ is used to turn the electricity in a current on or off.
A. Battery
B. Switch
C. Conductor
D. Coil
6) The flow of electric charge through something is a/an
A. Electric current
B. Circuit tester
C. Battery
D. Wire
7) A power source that can produce an electric current as a result of a chemical change in it is a/an
A. Indactor
B. Battery
C. Capacitor
D. Generator
8)Which of the following is a good conductor?
A. Plastic
B. Glass
C. Wood
D. Copper
9) What is resistance?
Opposition to current
B. Energy from battery
C. An increase in current
D. An increase in voltage
10) Which device is used to measure current?
A. Ammeter
B. Voltmeter
C. Resistor
D. Circuit beaker
11) Which is the correct unit for Power?
A. Ohms
B. Volts
C. Watts
D. Amperes
12) If a load draws 5 A Connected to a Battery with 24 V & 100 A.H ,How many hours this battery will be full discharged
13H
30H
150 Min
20H
13) Which of those push buttons will cause a short circuit ?
A
B
C
D
E
14) What is the reading of Voltmeter ?
A) 4 V
B) 2 V
C) 3 V
D) Non of the above .
15) According to Ohm's Law : current and resistance are
A) Directly proportional
B) Inversely Proportional
C) The same
D) All of the above
16) Servo motor motion is
A) Contentious rotational motion
B) Moves degree by degree until 30 degree
C) Moves step by step
D) Moves degree by degree until 180 degree
17) Storing current is the fun
A) Resistor
B) Inductor (Coil)
C) Capacitor
D) Non of the above
18) Which of those is a DC wave form
0%
0
0%
0
0%
0
0%
0
19) According to Ampere right hand rule , What is the direction of magnetic field
Up
Down
Left
Right
20) In DC motor the fun
A) Rotate
B) Protect the motor
C) Create magnetic field
D) increase the speed of motor
21) What is the rotating part in DC motor ?
A) Stator
B) Rotor
C) Frame
D) Frame
22) How to Reverse the direction of rotation in this Figure
A) Control it by variable resistor
B) Connect terminal (A) to the -ve and terminal (B) to the -ve
C) disconnect the batter
D) Connect terminal (A) to the -ve side and connect terminal ( B ) to the +ve side
23) According to Fleming left hand rule 1 , 2 & 3 are :
A) Motion , Current , Magnetic field
B) Motion , Magnetic field , Current
C) Current, Motion , Magnetic field
D) Non of the above .
24) In the diagram, we are looking down on the setup. The current is moving clockwise around the coil. Which way does the coil rotate?
A) The right side goes in, and the left side goes out.
B) The right side goes out, and the left side goes in.
C) The whole coil moves out.
D) The whole coil moves in.
25) What are the specifications that we buy a motor with ?
A) Voltage and resistance
B) Inductance and Capacitance
C) Voltage, torque and speed
D) Diminution and weight
26) In case you couldn't notice the direction of motor while it's rotation forward and reverse which one of those is suitable to notice
A) Resistor
B) Ohmmeeter
C) Poteniometer
D) Non of the above
27) What is the capacitance unit ?
A) Henry
B) Farad
C) Volt
D) Non of the above
28)The reading of Ohmmeter between X&Y = 800 Ohm if X is disconnected from ohmmeter and Z is connected to this side of ohmmeter what is the new reading
A) 1000 ohm
B) 300 ohm
C) 200 ohm
D) 800 ohm
29) If load draw 4A and it's internal resistance is 30 Ohm , what is the operating voltage ?
A) 12V
B) 7 V
C) 140V
D) 120 V
32) The shaft function in DC motor is to :
A) Generate magnetic field
B) Connecting mechanical loads (Wheel , Gears ...)
C) Protect the motor
D) Non of the above
In voltage regulator 7806 the output voltage is
A) 7 V
B) 78 V
C) 6 V
D) - 6 V
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