This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Temperature Rise in Transformers”. 1. The problem of temperature rise and cooling of transformers is essentially the same as that of rotating machinery. a) true b) false 2. How are the losses in the transformer and rotating machines converted to? … Read more
This set of Design of Electrical Machines Questions and Answers for Freshers focuses on “Design of Core and Winding – 2”. 1. What is the formula for the number of turns in primary winding? a) number of turns of primary winding = Voltage of primary windings * voltage per turn b) number of turns of … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Design of Core and Winding – 1”. 1. What is stacking factor? a) the allowance made for the power loss b) the allowance made for the space loss between laminations c) the allowance made for the heat loss between laminations … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Window Space Factor”. 1. What is window space factor? a) window space factor = copper area in the window – total window area b) window space factor = copper area in the window + total window area c) window space … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Pole Design”. 1. What are the factors the design of poles of the DC machine depends on? a) length, breadth, height of the conductors b) area of cross section of poles c) area of cross section of poles and height … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Selection of Number of Poles”. 1. How is the selection of number of poles made in AC and DC machines? a) any number of poles can be used for both AC and DC machines b) fixed number of poles in … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Design of Output Equations”. 1. With what component is the output equation of DC machines related to? a) power b) voltage c) current d) losses 2. What can be found out using the output equation of the DC machine? a) … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Design of Commutator and Brushes”. 1. What is a commutator in DC machines? a) electrical device which reverses the current direction between the rotor and external circuit b) mechanical device which reverses the current direction between the rotor and external … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Design of Armature”. 1. How many type of armature windings are present in the DC machine armature? a) 2 b) 3 c) 4 d) 5 2. Which factor determines the difference between the types of armature windings? a) brush connection … Read more
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Rating of Machines”. 1. What is the concept of power rating of machines with respect to voltage? a) the required supply voltage for smooth running of the machine b) the required supply voltage for stopping the machine c) the required … Read more
