Explain why reduced current is important during the motor acceleration

Q: Explain any one type of enclosure used in DC motors with necessary diagram

A: Electrical machines can be either generator , transformers or motors. They can be either Ac machines…

Q: Indicate whether the following statement are true or false * True False Dc shunt motor is best…

A: In this question , we will see why shunt motors provide low starting torque.. Note:- I will answer…

Q: 26 A 250 V shunt motor on no-load runs at 1000 r.p.m. and takes 5 A. the total armature and hunt…

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Q: A DC shunt motor with 200 Volt and 0.25 ohm armature winding resistance rotates at 1250 rpm, while…

A: Given data Vt =200V Ra=0.25 ohm Rext =6.5 ohm N1=1250 rpm Ia1= 10 A Ia2 = 6 A

Q: 1. Explain the effect of increasing the armature voltage on the behavior of the series wound machine…

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Q: (c) A 200 V, 1000 rpm, 100 A DC separately excited motor has an armature resistance of 0.05 Ohm. The…

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Q: 6- If a D.C. shunt motor is working at no load and if the shunt field circuit suddenly opens (a)…

A: The answer is option c.

Q: The armature resistance, 0.15 ohm, shunt field resistance, 220 ohms and series field resistance,…

A: We will take ratio of back emf  under full and noload to find ratio of flux in no load and full…

Q: What will happen if we run the motor at nominal load without starting? Please observe and explain…

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Q: Complete the wiring diagrams as per Worksheets 6-A and 6-B then solve for "A" through "K" for the DC…

A: Given Input voltage V =125 V Input current I = 16 A Armature resistance Ra =0.3 Ω Shunt field…

Q: 4. At 75% from the rated speed in the motor we isolated the auxiliary winding from the cct why?…

A: 4. Auxiliary winding is connected at the starting to maintain torque. At 75% of rated speed in…

Q: Briefly describe the regenerative braking method of a DC motor. Where it is used? For the toolbar,…

A: The detailed answer is solved below according to the given parameters and instructions in the…

Q: 12 Why does DC motor sometimes run too fast when under-loaded? * O Due to high line voltage O all of…

A: Q. Why does DC motor sometimes run too fast when under-loaded? Ans. Due to weak field  Explanation…

Q: Synchronous motor when the load is taken completely while working at full load in all properties…

A: Synchronous motor is constant speed motor always rotates at synchronous speed Ns =120fP

Q: Voltage control method of speed control in DC shunt motor is used for____appliactions. a. below…

A: Voltage Control  :-  When the speed is regulating the motor terminal voltage while maintaining…

Q: Calculate the speed when loaded

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Q: How the driving torque increases when the DC motor is suddenly loaded.

A: Torque produced in DC machine (separately/shunt ) is proportional to Flux per pole and armature…

Q: Explain different modes of operation of a 3 Ø Induction Motor with reference to the value of slip…

A: In this question , we will draw induction motor speed torque and slip torque characteristics and…

Q: How can you determine the current that a direct current motor will draw at start-up

A: Above question is based on DC motor, the major classification of DC motor are Series motor Shunt…

Q: a) If the torque pulled from the shaft is doubled while the asynchronous motor is working in the…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A 200V shunt motor drives a 200 Nm torque load when running at 1100 rpm. The armature and shunt…

A: Voltage V = 200 V Line current I =342 A  Armature resistance Ra=0.007 Ω Shunt field resistance Rsh=…

Q: What is the difference between torque of (1- 0) induction motor & torque of (3- 0) induction motor…

A: Given that  What is the difference between torque of single phase induction motor & torque of…

Q: The armature torque of a d.c. motor runing at 800 rpm is 99.3 Nm and shaft torque is 93.3 Nm. The…

A: Given a dc motor having, Running speed at, N = 800 rpm Armature torque, τa=99.3 Nm Shaft torque,…

Q: (Im) Does the excitation circuit current change as the motor current changes? explain the reasons.…

A: The excitation current does not change as the current motor changes because, in the shunt DC motor,…

Q: Explain with mathematical reasons why direct current motors cannot be operated from a constant…

A: The voltage of the dc motor is as follows:   V=I.R+Ldidt+E   =I.R+EE=ke.ωso, V=I.R+ke.ωke=Electrical…

Q: Explain the effect of increasing the armature voltage on the behavior of the shunt wound machine…

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Q: When a series dc motor is operated without a load, which of the following conditions occurs? The…

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Q: Complete the wiring diagrams as per Worksheets 7-A and 7-B then solve for "A" through "K" for the DC…

A: Given data, V=125 VI=16 ARa=0.3 ΩRsh=50 ΩRse=0.6 Ω

Q: Explain the effect of increasing the armature voltage on the behavior of the. series wound machine…

A: A series wound DC motor works as a shunt wound DC motor or compound wound DC motor in the category…

Q: How does the starting torque responsible in the use of the starter for the 3 phase induction motor

A: In the 3 phase induction motor, the value of the armature resistance is kept minimum to avoid the…

Q: Complete the wiring diagrams as per Worksheets 5-A and 5-B then solve for "A" through "G" for the DC…

A: Given, Terminal voltage,V=125 V Rated current,IL=16A Armature resistance,Ra=0.3 Ω Shunt field…

Q: Q3 A - Why the de shunt motor running at the infinity speed? B - Discuss the difference between D.C…

A: A- A dc shunt motor is a self excited dc motor in which the external supply voltage acts across the…

Q: Overload protection for motors is achieved by connecting _________. Explain how possible.

A: Need to explain overload protection for motors is achieved by connecting

Q: pleasee At no-load, a 250-V series motor runs at 1000 rpm while taking 8A. The total armature and…

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Q: Questions: 1-why does the speed fall slightly when the d.c. shunt motor is loaded?

A: Since you have posted multiple questions and not specified which question to solve. We will solve…

Q: A 240-volt shunt motor takes 5 amperes on no-load. The armature resistance is 0.25 ohm and the field…

A: For a DC shunt motor: V=240 VoltNo load current :I0=5 AArmature resistance: Ra=0.25 ΩField…

Q: Identify the DC motor that can be used in Electric Traction

A: DC MOTORMotor work on side of excitation which is that the side of excitation electrical when…

Q: a) Starting torque b) Slip at maximum torque c) Maximum torque d) Speed at maximum torque e) In…

A:

Q: motor slip

A: Asynchronous Motor (Induction motor) Induction motor speed varies with the change in load. And the…

Q: Explain the effect of increasing the armature voltage on the behavior of the series wound machine…

A: we need to explain the effect of increasing the armature voltage on the behaviour of the series…

Q: series motor, the armature torque is directly proportional to the armature current" True False

A: In dc series motor since the field winding is also connected in series with armature the flux is…

Q: Identify name of the DC motor that can be used in Electric Traction

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Q: How can the current that a direct current motor will consume at start-up be determined?

A: Above question is based on DC motor, the major classification of DC motor are Series motor Shunt…

Q: When a series dc motor is operated without a load, which of the following conditions occurs? * O The…

A: It is known that for DC series motor load decides the amount of armature current .when load of motor…

Q: What is the main precaution feature of running the series - wound de motor? Explain with the aid of…

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Q: In dc motor why the value of the starting current is high in starting.

A: DC motor is a device which runs on the DC supply.

Types of Braking

A brake is a mechanical device that absorbs energy from a moving system and inhibits its motion. It helps to slow or stop a moving vehicle, axle, wheel, etc. The braking system uses friction between two types of surfaces that are pressed together that convert kinetic energy into heat energy. For instance, we know that in the case of regenerative braking, the brakes convert energy into electrical energy which can be used for later use. The conversion of kinetic heat energy into potential energy is stored in the form of pressurized oil or air. In the brake disc, oil, or fin, the eddy current brakes convert kinetic energy into the electric current with the help of a magnetic field which is converted into heat.Generally, such braking systems apply to the moving axles of wheels. They may also take other forms like moving fluids' surface. In the case of drag racing cars, both wheel brakes are used whereas in parachute or airplanes, both wheel brakes or drag flaps raised in to the air are used.