# Most Repeated MCQs of Electrical Engineering

Pattern of academic test for Lady Cadet Course (LCC) in Pak Army has total 75 or 100 questions in which students are given for 35 to 40 minutes. Sometime time is given 60 minutes. Remember, policies remain changing every year for written examination of Pak Army.

**Related:- Basic Criteria and Procedure of Lady Cadet Course Jobs in Army**

## LCC MCQs of Electrical Engineering

MCQs of Electrical Engineering are given below to prepare initial tests of Pak Army LCC.

- Which device is used to measure voltage in an electrical circuit? Answer: Voltmeter
- What is the unit of electrical resistance? Answer: Ohm
- Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points? Answer: Ohm’s Law
- Which type of material is used as an insulator in electrical circuits? Answer: Rubber
- Which material is used as a conductor in electrical circuits? Answer: Copper
- What is the unit of electric power? Answer: Watt
- What is the SI unit of electric charge? Answer: Coulomb
- What is the unit of electric current? Answer: Ampere
- Which device is used to measure current in an electrical circuit? Answer: Ammeter
- What is the unit of electric potential? Answer: Volt
- Which type of material is used to make the core of a transformer? Answer: Iron
- Which type of motor is used in electric vehicles? Answer: Brushless DC motor
- What is the maximum voltage that can be safely used in a domestic electrical circuit? Answer: 230V
- What is the maximum current that can be safely used in a domestic electrical circuit? Answer: 13A
- Which type of circuit breaker is used in domestic electrical circuits? Answer: Miniature Circuit Breaker (MCB)
- What is the maximum voltage that can be safely used in a 3-phase electrical circuit? Answer: 415V
- What is the frequency of the power supply in India? Answer: 50Hz
- What is the function of a capacitor in an electrical circuit? Answer: To store electrical energy
- Which type of motor is used in air conditioners? Answer: Induction motor
- What is the function of a diode in an electrical circuit? Answer: To allow current to flow in only one direction
- Which type of material is used to make the filament of an incandescent bulb? Answer: Tungsten
- Which type of lamp is used in street lighting? Answer: Sodium vapor lamp
- Which type of motor is used in a washing machine? Answer: Universal motor
- Which law states that the total charge in a closed system is constant? Answer: Law of conservation of charge
- What is the function of a transistor in an electrical circuit? Answer: To amplify or switch electronic signals
- Which type of motor is used in a refrigerator? Answer: Single-phase induction motor
- What is the function of a relay in an electrical circuit? Answer: To control a high voltage or current circuit with a low voltage or current circuit
- Which type of battery is commonly used in mobile phones? Answer: Lithium-ion battery
- Which type of material is used to make the core of a choke coil? Answer: Iron
- Which type of material is used to make the core of a solenoid coil? Answer: Soft iron
- What is the function of a fuse in an electrical circuit? Answer: To protect the circuit from overcurrent
- What is the unit of electrical capacitance? Answer: Farad
- What is the function of an inductor in an electrical circuit? Answer: To store magnetic energy
- Which type of circuit is used in power transmission? Answer: Three-phase circuit
- Which type of motor is used in electric fans? Answer: Single-phase induction motor
- What is the function of a thyristor in an electrical circuit? Answer: To control high power electrical circuits

**Related:- Criteria, Paper Pattern and Past Questions of AFNS**

## Short MCQs of Electrical Engineering for LCC

MCQs of Electrical Engineering always help to pass the initial tests of Pak Army particularly, Lady Cadet Course.

**What is the SI unit of electric current?**Answer: The SI unit of electric current is Ampere (A).**What is the formula for calculating power in an electrical circuit?**Answer: The formula for calculating power in an electrical circuit is P=VI, where P is the power in watts (W), V is the voltage in volts (V), and I is the current in amperes (A).**What is the difference between AC and DC voltage?**Answer: The main difference between AC and DC voltage is that AC voltage changes direction periodically, while DC voltage remains constant in one direction.**What is the function of a transformer in an electrical circuit?**Answer: The function of a transformer in an electrical circuit is to change the voltage of an alternating current (AC) without changing the frequency.**What is the unit of electrical resistance?**Answer: The unit of electrical resistance is ohm (Î©).**What is the formula for calculating voltage in an electrical circuit?**Answer: The formula for calculating voltage in an electrical circuit is V=IR, where V is the voltage in volts (V), I is the current in amperes (A), and R is the resistance in ohms (Î©).**What is the difference between a capacitor and a resistor?**Answer: A capacitor stores electrical charge, while a resistor resists the flow of electrical current.**What is an electric circuit?**Answer: An electric circuit is a closed path through which electric current can flow.**What is the purpose of a fuse in an electrical circuit?**Answer: The purpose of a fuse in an electrical circuit is to protect the circuit from excessive current by breaking the circuit when the current exceeds a certain level.**What is the difference between a series and a parallel circuit?**Answer: In a series circuit, components are connected one after the other, while in a parallel circuit, components are connected across each other. In a series circuit, the same current flows through all the components, while in a parallel circuit, the voltage across each component is the same.

**See also: Recommended Books for Initial Tests of LCC**

## 10 Top Ranked MCQs of Electrical Engineering

Following MCQs of Electrical Engineering also help to pass the LCC initial tests with 100% surety. learn here for more.

**What is the unit of electrical resistance?**- a) ohms (Î©)
- b) volts (V)
- c) amperes (A)
- d) watts (W)

- Answer: a) ohms (Î©)

**Which device is used to store electrical charge?**- a) inductor
- b) resistor
- c) capacitor
- d) transformer

- Answer: c) capacitor

**Which law states that the total current entering a node in a circuit is equal to the total current leaving the node?**- a) Ohm’s law
- b) Kirchhoff’s current law
- c) Faraday’s law
- d) Gauss’s law

- Answer: b) Kirchhoff’s current law

**Which material is used as a semiconductor in electronics?**- a) copper
- b) silver
- c) silicon
- d) gold

- Answer: c) silicon

**What is the SI unit of power?**- a) watt (W)
- b) joule (J)
- c) volt (V)
- d) ampere (A)

- Answer: a) watt (W)

**Which type of transformer is used to increase the voltage level?**- a) step-up transformer
- b) step-down transformer
- c) isolation transformer
- d) autotransformer

- Answer: a) step-up transformer

**Which device is used to convert AC to DC?**- a) transformer
- b) rectifier
- c) inverter
- d) converter

- Answer: b) rectifier

**What is the symbol for a resistor in a circuit diagram?**- a) R
- b) C
- c) L
- d) D

- Answer: a) R

**Which type of motor is commonly used in household appliances like fans and washing machines?**- a) induction motor
- b) synchronous motor
- c) DC motor
- d) stepper motor

- Answer: a) induction motor

**Which law states that the induced electromotive force (EMF) in a circuit is proportional to the rate of change of magnetic flux through the circuit?**- a) Ohm’s law
- b) Kirchhoff’s voltage law
- c) Faraday’s law
- d) Gauss’s law

- Answer: c) Faraday’s law