What is a Vertical Speed Indicator?  -Operation -Parts

Q: Why must the field winding left connected across the supply during the braking period?

A: The explanation is as follows.

Q: What do you think would happen if you continued to increase the motor load and what conclusions do…

A: This question is belong to drives

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

A:

Q: (c) Explain with the terms with diagram of wind energy extraction- i) wake. ii) Cut-in-Speed,…

A: Solution of question (c): It is asked to explain the terms wake, cut-in and cut-out speed,…

Q: d) Squirrel cage asynchronous motor, which has never been used before, will be operated as a…

A: Dear student as per our guidelines we are supposed to solve only one question.kindly repost other…

Q: Explain about controlling torque using Spring control method. Please do not write the answer in a…

A: Controlling Torque The control device is a device that is used to control the deflection of the…

Q: Describe the responses of the armature and field currents, speed, and torque during starting.…

A: The graph that are showne here represent the characteristics of a dc series motor  It can be…

Q: At what speed (statute miles per hour) should this airplane turn to achieve the highest rate of turn…

A: A V-N diagram is given in the question. We need to tell at what speed should the airplane turn in…

Q: 4- What is the effect of saturation on speed and torque?

A: When the frequency drops the V/Hz is high. This means that the motor needs a larger magnetic type of…

Q: speed from full-load to no-load is 2 % in one machine and 3 % in the other; the characteristics…

A: It is given that: Two  50 MVA , 3 phase alternator working in parallel: for machine 1⇒full load to…

Q: What is the most proper technology potential for powering the cars of the future?

A: The automotive industry is experiencing the biggest upheaval in its history. Pascal Brier, Altran…

Q: A) Explain in details main used methods of electric braking of the DC shunt motor; draw the…

A: Since you have asked multiple questions in a single request, we will be answering only the 1st…

Q: What is meant by induction heating of metal raceways and how can you prevent it?

A: The induction heating of metal raceways is as follows: - Induction heating is the way toward warming…

Q: Explain why reduced current is important during the motor acceleration

A: Reduced current is important during motor acceleration because the current is very during starting…

Q: What  is plugging type braking?

A: Braking is of two type, one is for mechanical system and other is for electrical system. Hence,…

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

A: The shunt machine (generator) circuit can be represented as: The machine equation is written as:…

Q: What parameters need to be considered while choosing a motor for an electric vehicle?

A: Electric vehicle: This vehicle work on electricity instead of diesel or petrol. Electricity is…

Q: According to the rotor structure diagram below, write out the rotor support scheme of the engine and…

A: We have given the following problem

Q: what is generator speed for a wind turbine?

A: Wind turbines are used to generate the power from the force exerted by the winds. The force exerted…

Q: Explain, in details, why it is necessary to use starting resistance?

A: We know that at the time of starting motor back emf is zero. Due to this motor draw heavy current…

Q: what happen to the dc if it runs without any starter?explain in details with diagram.

A: During the startup of the DC motor, there is very high current and torque developed in the motor and…

Q: Name the three drive configurations that a gear set can transfer torque?

A:

Q: What happened to the dc if it runs without any starter?

A: What happened to the dc if it runs without any starter?

Q: How dose dc motor used for elevator work ?

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Q: what should be the transition time from Star connection to Triangle connection, explain the change…

A: The star to delta starters is used commonly for the machines having high inertial mass such as…

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

A:

Q: What is starter ? Function of starter?

A: A motor starters main job is to start and stop the motor to which it is attached. These…

Q: Explain why control torque should be equal to deflection torque,happens if the control is more than…

A: The PMMC type instruments and indicating instruments consists 3 types of torque in their operation.…

Q: Explain No load test or rotational loss test and Blocked rotor test.

A: Induction motor working Principle When an ac supply is connected to a stator it creates a rotating…

Q: what are the advantages of speed control by flux control method?

A: The advantages of speed control by flux control method Field controlled DC motors can only operate…

Q: If the speed of the driving motor falls due to loading what will be the effects?

A: A motor is a device which convert electrical energy into mechanical energy.The speed (RPM)of a motor…

Q: Write short note on rheostatic braking and plugging braking

A: Rheostatic braking Rheostatic braking is also known as dynamic braking. This allows the motor to be…

Q: Explain the effect of speed on the open circuit char ?

A: the effect of speed on the open circuit characteristics

Q: In applications such as hoist, gates, movable bridges, street cars, locomotives, and transfer cars,…

A: The suitable motor for such types of loads is DC series motor. Because, DC Series motor gives high…

Q: Why is a starting resistor needed to bring a motor up to speed?

A: The dc resistance of a motor frame is extremely low, such that excess current is produced when dc…

Q: ☺ Determine the induced Valtage, which induçed in the armature of a do generutor running at 1750 rpm…

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Q: explain open loop control system and closed loop control system

A: Open loop control system : A system in which there no influence of output on the input of system is…

Q: Why is the speed decrease by the increasing load?

A:

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: 1. If suddenly remove the load for the open loop control system, what will happen? please describe…

A: Open-loop control system: It is a type of control system in which input is independent of the…

Q: 7- Discuss the three method of speed control from results obtained, which method is perfable and for…

A:

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.