This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on “Operating Characteristics of DC Series Motor -1”. 1. DC series motors are used _______________ a) Where load is constant b) Where load changes frequently c) Where constant operating speed is needed d) High starting speed 2. Where compensating winding is provided in … Read more
This set of DC Machines Quiz focuses on “Operating Characteristics of DC Shunt Motor – 2”. 1. As the load is increased the speed of DC shunt motor will ___________ a) Reduce slightly b) Increase slightly c) Increase proportionately d) Reduce rapidly 2. The armature torque of the DC shunt motor is proportional to a) … Read more
This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on “Operating Characteristics of DC Shunt Motor -1”. 1. For machine tools, which DC motor can be used? a) DC Series motor b) DC Shunt motor c) DC cumulative compound motor d) DC differential compound motor 2. In a DC shunt motor, speed … Read more
This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on “Parallel Operation of DC Generator”. 1. For connecting two generators in parallel, they should have __________________ a) Same current rating b) Same ohmic rating c) Same voltage rating d) All ratings must be same 2. While connecting two DC generators in parallel, … Read more
This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on “Graphical Representation of External Characteristics”. 1. No load point of DC generator is __________ a) Intersection of OCC and Rf line b) Point on the Y axis at rated field current c) Point on the X axis at rated terminal voltage d) … Read more
This set of DC Machines test focuses on “Characteristics of Separately Excited Generators”. 1. Characteristics of separately excited DC generator are drawn by keeping _____ a) Field current and speed both constant b) Field current and speed both variable c) Field current constant and speed variable d) Field current variable and speed constant 2. What … Read more
This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on “Characteristics of Self Excited Generator”. 1. What is Self-excitation in DC shunt generator? a) Field winding is connected in series of armature b) Field winding is connected in parallel of armature c) Field winding is not connected to the armature d) Field … Read more
This set of DC Machines Problems focuses on “External and Armature Characteristics of DC Generator”. 1. Armature characteristic is _____________ a) No-load characteristic b) Load characteristic c) OCC Current d) Cannot be determined 2. External characteristics is drawn with constant term/s ____________ a) Field current b) Speed c) Both Field current and Speed d) Load … Read more
This set of DC Machines Assessment Questions and Answers focuses on “No Load with On Load Characteristics of DC Generator”. 1. Which of the following is not the operating characteristics of Dc generator? a) No-load characteristics b) Load characteristics c) External characteristics d) Internal characteristics 2. Characteristics drawn at Ia = 0 is also called … Read more
This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on “Methods of Excitation”. 1. Which winding has large number of turns? a) Shunt field b) Series field c) Both have same number of turns d) Depends on requirement 2. Which winding contains wire with higher thickness? a) Shunt field b) Series field … Read more
