How to answer multiple choice questions on DC generators?
Answer: Option A 02. Answer: Option C 03. Answer: Option A 04. Answer: Option A 05. Answer: Option A 06. Answer: Option B 07. Answer: Option B 08. Answer: Option B 09. Answer: Option A 10. Answer: Option D An error occurred. Please try again later
Do you need a d.c.series motor?
11. In D.C. shunt motors as load is reduced 12. A D.C. series motor is that which 13. For starting a D.C. motor a starter is required because 14. The type of D.C. motor used for shears and punches is 15. If a D.C. motor is connected across the A.C. supply it will 16.
Which is the essential condition for parallel operation of two DC generators?
1. Armature reaction in a generator results in 2. The essential condition for parallel operation of two D.C. generators is that they have 3. The commutator segments are connected to the armature conductors by means of 4. Copper brushes in D.C. machine are used 5. Armature reaction of an unsaturated D.C. machine is 6.
How to practice DC motor basics questions and answers?
To practice all areas of DC Machines, here is complete set of 1000+ Multiple Choice Questions and Answers. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!
Is the commutator the same as brushes in a DC motor?
Explanation: All other parts except brushes and commutator are same in AC machine when outer looks are only taken in consideration. Commutator is used only in DC machine for providing mechanical rectification and not in AC machine. 5. In DC motor, which of the following part can sustain the maximum temperature rise?
What happens if DC shunt motor is connected across AC supply?
This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on “DC Motor Basics -1”. 1. What will happen if DC shunt motor is connected across AC supply?
What happens when DC motor is connected to parallel field?
Explanation: In case of parallel field connection, it won’t rotate at all and will start humming and will create vibrations, as a torque produced by positive and negative cycle will cancel out each other. DC motor will be heated up and it may burn. 2. What will happen if the back emf of a DC motor vanishes suddenly?