This set of Electric Drives Multiple Choice Questions & Answers (MCQs) focuses on “Dynamics – Load Torques that Vary with Time”. 1. Servo motors are an example of which type of load? a) Pulsating loads b) Short time loads c) Impact loads d) Short time intermittent loads 2. Load torque of the crane is independent … Read more
This set of Tough Electric Drives Questions and Answers focuses on “Dynamics – Load Torques that Vary with Angle of Displacement of the Shaft”. 1. Duty cycle (D) is _______ a) Ton÷Toff b) Ton÷(Ton+ Toff) c) Ton÷2×(Ton+ Toff) d) Ton÷2×Toff 2. A 220 V, 1000 rpm, 60 A separately-excited dc motor has an armature resistance … Read more
This set of Electric Drives Assessment Questions and Answers focuses on “Dynamics – Load Torques that Depend on the Path or Position Taken by the Load During Motion”. 1. What is the empirical formula for the tractive force required to overcome curve resistance? (W-the weight of the body, R – radius of curvature) a) 710×W÷R … Read more
This set of Electric Drives Interview Questions and Answers focuses on “Dynamics – Quadrantal Diagram of Speed – Torque Characteristics “. 1. Regenerative braking mode can be achieved in which quadrant (V-I curve)? a) Third b) Second c) Fourth d) First 2. Fan type of loads exhibits which type of load torque characteristics? a) Constant … Read more
This set of Electric Drives Multiple Choice Questions & Answers (MCQs) focuses on “Dynamics – Types of Loads”. 1. Load torques can be classified into how many types? a) Three b) Two c) Four d) Five 2. Rolling mills exhibit what type of load torque characteristics? a) Constant torque characteristics b) Linearly rising torque characteristics … Read more
