60 min Score: 0 Attempted: 0/60 Subscribe 1. What is the main advantage of a switching power supply compared to a linear power supply? (A) Higher efficiency (B) Lower cost (C) Smaller size (D) Lower electromagnetic interference 2. Which component in a switching power supply is responsible for converting DC voltage to high-frequency AC voltage? … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. What is the main advantage of a switching power supply compared to a linear power supply? (A) Smaller size (B) Lower cost (C) Higher efficiency (D) Lower electromagnetic interference 2. Which component in a switching power supply is responsible for converting DC voltage to high-frequency AC voltage? … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. Which of the following is not a type of electric drive? (A) AC drive (B) DC drive (C) Hydraulic drive (D) Servo drive 2. In an electric drive system, the function of the controller is to: (A) Generate electric power (B) Convert DC to AC (C) Regulate … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. Which device is not commonly used in power electronic circuits? (A) Diode (B) LED (C) BJT (D) MOSFET 2. What is the primary function of a rectifier in power electronics? (A) To convert DC to AC (B) To regulate voltage (C) To amplify signals (D) To convert … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. What is the acceptable voltage variation limit for sensitive electronic equipment as per IEEE standards? (A) ±5% (B) ±10% (C) ±15% (D) ±20% 2. Harmonics in power systems are primarily caused by: (A) Unbalanced loads (B) Non-linear loads (C) Overloaded transformers (D) Voltage sags 3. The total … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. What is the primary goal of fault analysis? (A) To identify and correct faults in a system (B) To improve system performance (C) To document system weaknesses (D) To audit system design 2. Which of the following is not a common type of system fault? (A) Hardware … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. What is the primary objective of load flow analysis in power systems? (A) Fault detection (B) Economic operation (C) Voltage regulation (D) Power quality improvement 2. Which of the following methods is commonly used for load flow analysis? (A) Newton-Raphson method (B) Kirchhoff’s Current Law method (C) … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. Which of the following phenomena can lead to power system instability? (A) Voltage collapse (B) Load shedding (C) Reactive power injection (D) All of the above 2. The swing equation in power system stability analysis describes the dynamics of: (A) Generator rotor angle (B) Bus voltage magnitude … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. Which of the following is not a primary component of a power system? (A) Transmission line (B) Circuit breaker (C) Transformer (D) Generator 2. The power generated by a synchronous generator is given by: (A) V × I (B) VI cos θ (C) V² / R (D) … Read more
50 min Score: 0 Attempted: 0/50 Subscribe 1. What is the primary objective of a smart grid? (A) To reduce power generation (B) To increase transmission losses (C) To improve efficiency and reliability (D) To increase carbon emissions 2. Smart grids incorporate advanced ________ to monitor and control the flow of electricity. (A) Transformers (B) … Read more