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
Which material is the best conductor of electricity?
Answer: Copper
Copper is an excellent electrical conductor due to its low resistivity and is widely used in electrical wiring.
Two resistors of 4 ohms and 6 ohms are connected in series. What is the total resistance?
Answer: 10 ohms
In a series circuit, total resistance is the sum of individual resistances: 4 + 6 = 10 ohms.
What happens to current in a circuit if the voltage is doubled while resistance stays the same?
Answer: Current doubles
According to Ohm's Law (I = V/R), current is directly proportional to voltage, so doubling voltage doubles current.
Which device is used to measure the current flowing through a circuit?
Answer: Ammeter
An ammeter measures current in amperes and must be connected in series with the circuit.
What is the function of a diode in an electrical circuit?
Answer: Allows current to flow in only one direction
A diode permits current flow in the forward direction and blocks it in the reverse direction, acting as a one-way valve for electricity.
If a 120-volt circuit draws 10 amps, how much power is being consumed?
Answer: 1,200 watts
Power equals voltage multiplied by current (P = V x I), so 120 volts times 10 amps equals 1,200 watts.