Engineering - Electrical Engineering - MCQs
Explore our extensive collection of Electrical Engineering MCQs, covering essential topics such as Circuit Theory, Electromagnetism, Control Systems, Power Systems, and Electronics. These Electrical Engineering questions are vital for students preparing for competitive exams conducted by FPSC, NTS, KPPSC, PPSC, SPSC, BPSC, OTS, UTS, PTS, CTS, ATS, ETEA, and other testing agencies in Pakistan. Strengthen your understanding of electrical engineering concepts and enhance your exam readiness with our expertly crafted MCQs, designed to help you excel in various assessments.
What type of transformer is used to increase voltage?
A. Step-down transformer
B. Isolation transformer
C. Step-up transformer
D. Auto-transformer
Answer: Step-up transformer
In an electric circuit, what does the term ‘ground’ refer to?
A. A connection to the earth or a common reference point
B. The positive terminal of a battery
C. The point where current begins
D. A type of resistor
Answer: A connection to the earth or a common reference point
What is the primary purpose of a transformer?
A. To convert DC to AC
B. To increase or decrease voltage levels
C. To store electrical energy
D. To measure electrical current
Answer: To increase or decrease voltage levels
What is the unit of electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: Ohm
What is the purpose of circuit protection devices like fuses and circuit breakers?
A. To increase current flow
B. To store energy
C. To prevent overloads and short circuits
D. To measure power consumption
Answer: To prevent overloads and short circuits
What is the purpose of a circuit breaker?
A. To measure current
B. To regulate voltage
C. To interrupt electrical flow during overload
D. To convert AC to DC
Answer: To interrupt electrical flow during overload
Which law relates voltage, current, and resistance in an electrical circuit?
A. Ohm's Law
B. Kirchhoff's Law
C. Faraday's Law
D. Ampere's Law
Answer: Ohm's Law
What is the function of a diode in an electrical circuit?
A. To store energy
B. To allow current to flow in one direction only
C. To increase voltage
D. To measure current
Answer: To allow current to flow in one direction only
Which of the following is a semiconductor material?
A. Copper
B. Silicon
C. Aluminum
D. Gold
Answer: Silicon
What is the main purpose of a relay in an electrical circuit?
A. To store energy
B. To amplify signals
C. To switch circuits on and off
D. To measure current
Answer: To switch circuits on and off