20 min Score: 0 Attempted: 0/20 Subscribe 1. Which of the following is NOT a basic electrical component in a circuit? (A) Resistor (B) Capacitor (C) Magnet (D) Inductor 2. Ohm’s Law relates voltage (V), current (I), and resistance (R) in a circuit and is given by: (A) R = V/I (B) P = IV … Read more
20 min Score: 0 Attempted: 0/20 Subscribe 1. A relay is used to: (A) Amplify current (B) Open and close a circuit (C) Convert AC to DC (D) Store electrical energy 2. The basic function of a relay is based on: (A) Electromagnetic induction (B) Semiconductor properties (C) Capacitive coupling (D) Magnetic resonance 3. Which … Read more
15 min Score: 0 Attempted: 0/15 Subscribe 1. A Bipolar Junction Transistor (BJT) is made up of how many layers of semiconductor material? (A) Two (B) Three (C) Four (D) Five 2. In a BJT, the region between the base and emitter is called the: (A) Collector (B) Emitter (C) Base (D) Junction 3. In … Read more
15 min Score: 0 Attempted: 0/15 Subscribe 1. A diode is a device that allows current to flow in: (A) Both directions (B) Direct current only (C) Alternating current only (D) Only one direction 2. In a PN junction diode, the P-type material is rich in: (A) Electrons (B) Holes (C) Neutrons (D) Protons 3. … Read more
15 min Score: 0 Attempted: 0/15 Subscribe 1. The working principle of a transformer is based on: (A) Ohm’s Law (B) Lenz’s Law (C) Faraday’s Law of Electromagnetic Induction (D) Coulomb’s Law 2. A transformer operates on: (A) Direct current (B) Alternating current (C) Both AC and DC (D) Static electricity 3. The core of … Read more
Q1: The primary property of an inductor is to:(A) Store energy in an electric field(B) Store energy in a magnetic field(C) Resist the flow of current(D) Amplify voltageAnswer: (B) Store energy in a magnetic field Q2: The SI unit of inductance is:(A) Tesla(B) Henry(C) Weber(D) FaradAnswer: (B) Henry Q3: Inductors oppose changes in:(A) Voltage(B) Current(C) … Read more
Q1: Which of the following is NOT a type of capacitor?(A) Ceramic capacitor(B) Electrolytic capacitor(C) Inductive capacitor(D) Tantalum capacitorAnswer: (C) Inductive capacitor Q2: Which type of capacitor is polarized?(A) Ceramic capacitor(B) Electrolytic capacitor(C) Mica capacitor(D) Film capacitorAnswer: (B) Electrolytic capacitor Q3: Tantalum capacitors are preferred for:(A) High-frequency applications(B) Low-voltage applications(C) Large capacitance in small sizes(D) … Read more
Q1: Which of the following is NOT a type of resistor?(A) Carbon film resistor(B) Wire-wound resistor(C) Capacitive resistor(D) Metal oxide resistorAnswer: (C) Capacitive resistor Q2: Variable resistors are also known as:(A) Fixed resistors(B) Potentiometers(C) Thermistors(D) PhotoresistorsAnswer: (B) Potentiometers Q3: A thermistor is a type of resistor whose resistance:(A) Decreases with temperature(B) Increases with temperature(C) Depends … Read more
10 min Score: 0 Attempted: 0/10 Subscribe 1. The SI unit of electric current is: (A) Volt (B) Ohm (C) Ampere (D) Coulomb 2. The SI unit of voltage is: (A) Volt (B) Ampere (C) Ohm (D) Joule 3. The unit of electrical resistance is: (A) Ampere (B) Ohm (C) Joule (D) Watt 4. The … Read more
Q1: Ohm’s Law states that:(A) Current is proportional to resistance(B) Voltage is proportional to resistance(C) Current is proportional to voltage(D) Power is proportional to voltageAnswer: (C) Current is proportional to voltage Q2: The mathematical expression for Ohm’s Law is:(A) I=V×RI = V times RI=V×R(B) V=I×RV = I times RV=I×R(C) R=V×IR = V times IR=V×I(D) P=I2RP … Read more