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DC Motors Objective Questions and Answers - Set 01 MCQ DC Motors Edit Practice Test: Question Set - 01. 1. A three point starter is considered suitable for (A) Shunt motors (B) Shunt as well as compound motors (C) Shunt, compound and series motors (D) All D.C. motors ...

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Mar 04, 2021· 100 Most Important Multiple choice Question of DC Motor|Objective type question of DC Motor with explanation| Why efficiency of D.C motor is below 50%

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DC Motor MCQ Objective Questions and Answers Page - 2. 1. if the load current and flux of a dc motor are held constant and voltage applied across it armature is increased by 54% , the speed of the motor will. A. increase by 5%. B. reduce by 5%. C. remain un-alternated. D. depends on other factors.

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The brushes in a DC motor have two purposes. They carry current to the armature (the rotating part). The brushes work with the commutator to switch the current to the proper winding of the armature as it rotates. This creates the correct magnet fields to make the motor run. Essentially, a brush is one contact of a switch; the commutator is the ...

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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? a) Will run at normal speed b) Will not run c) Will Run at lower speed d) Burn due to heat produced in the field winding View Answer

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Mar 14, 2017· D.C. MOTORS Multiple Choice Questions :-1. No-load speed of which of the following motor will be highest ? (a) Shunt motor (b) Series motor (c) Cumulative compound motor (d) Differentiate compound motor Ans: b. 2. The direction of rotation of a D.C. series motor can be changed by (a) interchanging supply terminals (b) interchanging field terminals

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Sep 11, 2012· DC Machine Multiple Choice Questions with Solutions: Part-12 Electrical Engineering Basics Objective Questions with Answers: Part-17 Electrical Machine - DC Motor Objectives: Part 7

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DC Motors Objective Questions and Answers - Set 01 MCQ DC Motors Edit Practice Test: Question Set - 01. 1. A three point starter is considered suitable for (A) Shunt motors (B) Shunt as well as compound motors (C) Shunt, compound and series motors (D) All D.C. motors ...

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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? a) Will run at normal speed b) Will not run c) Will Run at lower speed d) Burn due to …

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Mar 04, 2021· Answer. 4. 36.36% decrease. Explanation:-Given Data. Supply Voltage V = 220 V Speed N 1 = 1000 RPM Armature Resistance R a = 0.25 Ω Line Current I L = 68A & 52.8A Field current I F = 2.2 A & 1.8 A Speed N 2 = 1600 RPM The Line current of DC shunt motor …

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DC Machines can be tested by three different methods namely Direct Method, Indirect Method and Regenerative Method. Direct Method of testing of DC Machine is also known as Brake Test. Direct method is suitable for small DC machines. In Direct Method, the DC machine is subjected to rated load and the entire output power is wasted.

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Take DC Motor MCQ Test & Online Quiz to test your Knowledge. Below is the DC Motor MCQ test that checks your basic knowledge of DC Motor.This DC Motor MCQ Test contains 20 Multiple Choice Questions.You have to select the right answer to the question. Finally, you can also take the Online Quiz from the Take DC Motor …

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The starting current of a 220V, 10HP shunt motor having an ...

Related Questions on DC Motors Objective Questions - Electrician (Set-1) with Answers 72) A 220V DC machine has an armature resistance of 0.5 ohm. If the armature current is 20 amps, the induced emf when the machine works as (i) generator (ii) motor will be :

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Multiple Choice Question (MCQ) of D.C. Machines page-1. 1.A shunt motor is fitted with a field regulator for speed control. For constant torque load, the speed will be …

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Home >> Category >> Electrical Engineering (MCQ) questions and answers >> DC Machines; 1) With the increase in temperature, the speed of series and shunt motor will. a. Increase, decrease b. Decrease, increase c. Increase, increase d. Decrease, decrease.

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Home » D.C.MOTORs Questions » 130 TOP DC MOTOR Objective Questions Answers pdf free Download. 130 TOP DC MOTOR Objective Questions Answers pdf free Download. 21. What will happen if the back e.m.f. of a D.C. motor vanishes suddenly? (a) The motor will stop (b) The motor will continue to run (c) The armature may burn

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Jan 18, 2021· DC motor objective questions answers pdf in hindi. January 18, 2021 January 9, 2019 by Electric Jankari. ITI Electrician Question paper और Transformer Question answers के बारे में मैं पहले ही posts कर चुका हूं । आज मैं आपको DC Motor ...

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Answer 2 False Explanation: There is no concept of power factor improvement in DC Circuits because the phase angle (θ) between Current (I) and voltage (V) is 0 and the then power factor becomes Cos θ = 1. So power factor in DC Circuits is 1 and Only 1. In other words there is no reactive component in DC …

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Learn D.C. Motors MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. D.C. Motors MCQ question is the important chapter for a Electrical Engineering and GATE students.

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Question: I. Objectives The objective of this Lab is: To study the open loop speed control of DC motor. To study the closed loop speed control of DC motor. To study the effect of the PID controller for speed controller of DC motor. II. Introduction In many applications it is necessary to maintain the speed of electric motors constant.

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DC Motors Objective Questions & Answers – Part 3. Next Post: DC Motors Objective Questions & Answers – Part 1. Related Articles. Electrical Machines Top Electrical Machine Design Objective Questions. February 8, 2017. Electrical Machines Freshers Electrical Machines Interview Questions.

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Most Asked Objective Questions or MCQ on D.C. Motors for Electrical Engineering MCQ No comments Multiple Choice Questions (MCQ) on D.C. Generators for Electrical Engineering. 1. The direction of rotation of a D.C. series motor can be changed by ... Multiple Choice Questions …

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Ques 64. The power supplied to a three-phase induction motor is 32 kW and the stator losses are 1200 Watt. If the slip is 5 percent. determine the rotor copper loss 1. 2.8 kW 2. 3.5 kW 3. 4 kW 4. 1.54 kW Show Explanation Ques 65. From the above question find the total mechanical power developed by the Rotor 1. 30.28 kW 2. 29.26 kW 3. 25.2 kW 4. 14.45 kW Show Explanation Show Explanation Ques 66.

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Jul 21, 2020· Hello guys, welcome back to my blog. In this article, I will discuss dc motor MCQ or quiz, quiz questions for dc motors, or electrical interview questions related to dc motors. If you want an article on some other topics then comment us below in the …

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Home MCQ DC Motors MCQ online Practice Test on DC Motors - Set 10 MCQ online Practice Test on DC Motors - Set 10 MCQ DC Motors Edit ... Helical Gears Multiple Choice Questions. Helical Gears MCQ Practice Test 1. In a pair of crossed helical gears, both gears have right hand helical teeth with 45 ° helix angle. ...

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D.C.Machine, Electrical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, Electrical Engineering, Multiple Choice Questions, Objective type questions, Electrical Engineering short notes, rapid fire notes, best theory ... The speed of a dc shunt motor can be raised above its ...

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Multiple choice questions on dc motor # 8 Unknown 9:18 AM. Unknown Hi friends, this is post about objectives of electrical engineering with emphasis on dc motor check out and comment... 1) The speed of a dc shunt motor can be raised above its rated value by A) inserting an additional resistance in the armature circuit ...

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Most important MCQ or objective questions on induction motor are discussed in this page. These MCQs are popular and regularly asked. ... Which DC motor has similar characteristics as a three phase induction motor? (a) ... INTERVIEW QUESTIONS. MCQ or Objective. Recommended Post MCQ on DC Generator – 2 MCQs on Transformer

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Then the input ac line current to the converter has (a) an rms value equal to the dc load current (b) an average value equal to the dc load current Multiple Choice Questions (MCQs) 183 (c) a peak value equal to the dc load current (d) a fundamental frequency component, whose rms value is equal to the dc …

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Ques.[4] If a hybrid stepper motor has a rotor pitch of 36º and a step angle of 9º, the number of its phases must be (a)4 (b)2 (c)3 (d)6 Answer: A Ques.[5] The rotor of a stepper motor has no

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DC Motor or Direct Current Motor Multiple Choice Questions and Answers. 6. The induced EMF in the armature conductors of a DC motor is ..... A. Sinusoidal B. Trapezoidal C. Rectangular D. Alternating

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DC Motors Objective Questions - Electrician (Set-1) with Answers. 1) A force will act on a conductor placed in a magnetic field when : a current is flowing in the conductor. the conductor is rotating. the conductor is placed in the magnetic field and it is not carrying a current.

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Multiple Choice Interview Questions On Special Motor Part 2. Multiple Choice Interview Questions On Special Motor Part 2. Ques.[1] For torque transmission over a long distance with the help of electrical wires only, which of the following two synchros are used ? ... brushless dc motor (b) disk motor (c) permanent-magnet synchronous motor