Mechanical Aptitude Basic Electrical Circuits Questions and Answers Flashcards
6 cards from real MECHANICAL APTITUDE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Mechanical Aptitude Basic Electrical Circuits Questions and Answers flashcards as text
In a parallel circuit with three identical resistors, what happens to the total resistance compared to a single resistor?
Answer: It becomes one-third of a single resistor
In a parallel circuit, the total resistance equals one resistor's value divided by the number of identical resistors.
A 9-volt battery is connected to a 3-ohm resistor. What is the current flowing through the circuit?
Answer: 3 amps
Using Ohm's Law (I = V/R), 9 volts divided by 3 ohms equals 3 amps.
Which component stores electrical energy in an electric field?
Answer: Capacitor
A capacitor stores energy in an electric field between its two conductive plates separated by an insulator.
What is the unit of measurement for electrical power?
Answer: Watt
Electrical power is measured in watts, calculated by multiplying voltage by current.
In a series circuit, if one light bulb burns out, what happens to the other bulbs?
Answer: All other bulbs go out
In a series circuit, all components share a single current path, so a break anywhere stops current flow to all components.
What does a fuse do in an electrical circuit?
Answer: Breaks the circuit when current exceeds a safe level
A fuse contains a thin wire that melts and breaks the circuit when excessive current flows through it, protecting the circuit from damage.