Advance Motor Control 1. Why are contacts often disconnected in series when controlling small motors 2. Why are clapper type contactors generally used to control DC device

Q: 5. How are larger control transformers supplying a motor control center usually cooled?

A: Power transformer are mainly used for supplying a motor these motor generates a very huge amount of…

Q: Which of the following is a safety device in a motor control circuit. Select one: a. selector switch…

A: In the motor control  circuit , motor contactor is used  to switch the current at the time of…

Q: What is the application of Automatic Change over switch?

A: The power system has to transmit power from the generation side to the load side. For this purpose,…

Q: 1. If the control loop is closed around time, meaning the actuator is controlled by a time-based…

A: 1.Here actuator is controlled by a time-based relay. Thus, feed back loop is available. when the…

Q: Explain (i) control relay and (ii) Thermal overload relay?

A: Control relay A control relay is an electromagnetic device that is most commonly used in protection…

Q: What is the difference bewteen a grounded control system And a floating control system?

A: A normal transformer consists of a primary and a secondary winding. But, a control transformer is…

Q: Identify and describe the basic functional elements that could be used in closed loop control for…

A: Closed-loop Control system -  A closed-loop control system, also termed a feedback control system,…

Q: What are typical uses for control relays

A: Relays are sensing devices in nature. Control relays enable a low current circuit to control a high…

Q: 4. What is the difference between the reverse power relay and the direction relay?

A: The difference between reverse power relay and the directional relay is

Q: Describe the function of relay. Sketch a circuit to explain the function of relay.

A: In electrical engineering there are certain devices and machine that are used to protect the main…

Q: 3-phase, 50-horsepower induction motor

A:

Q: 3. Enumerate the different types of devices used in magnetic DC Controller? 4. Explain briefly…

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Q: Explain in detail the purpose of a time-delay, low-voltage release relay assembly installed in a…

A: The time-delay, low-voltage release relay assembly installed in a motor control circuit is shown…

Q: Explain all the types of distance protection relays?

A:

Q: 4. What precautions concerning, the field circuit.b) The armature current must be taken when…

A: During the operation of DC shunt motor:

Q: Tell what is rise time, peak time and delay time in the control system?

A: Rise time: Rise time is defined as the time taken by the response of the system to reach at the…

Q: 5. Explain the used of Drum Switches? Draw the 6 point , 8 point and 9 point drum switches? 6. How…

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

Q: If both the forward and reverse contactors for a motor engage at the same time, what will happen to…

A: In this question we need to discuss what happen when both the forward and reverse contactors for a…

Q: In which control circuit wire are the overload relay contacts connected ?

A: Control circuit: It consists of the contacts of the overlapping relays, the coil and the coil…

Q: D Question 28 An industrial selector switch would most often have: double break contacts. O more…

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Q: Draw the simple Motor Start/Stop Control circuit we have been working with in class. Be sure to…

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Q: A selector switch Andrés two- aire piloto debiese cannot be used to comtrol a larger motor directly…

A:

Q: what is protective relays?

A: A protective relay is a piece of switchgear that recognises a failure and starts the circuit…

Q: b) Differentiate between modern and classical control system?

A: Since both questions are different so we are supposed to answer any one.  b)  In systems described…

Q: Where can you find the low/high voltage connection diagram of a motor?

A: As per the NEMA, the low/high voltage connection of the motor can be classified by the number of…

Q: Why do you think some motor control circuit utilizes single voltage sources for control and power…

A: Types of Motor control based on power supply  Three power supply  Two wire supply  Types of…

Q: Brief about DC motor control using L298N module, and write a code to drive the DC motor using L298N…

A: DC motor control using L298N: It is a 15-pin motor driven IC. It is high current and high voltage IC…

Q: Using the time limit overload or the dashpot overload relay, how are the following achieved:…

A: Using the time limit overload or the dashpot overload relay, the tripping current adjustments are…

Q: Consider the block diagram shown is for a closed-loop temperature control system. Where is the…

A: Given: The block diagram for a closed loop temperature controlled system is,

Q: Defined all fundamental requirements of protective relay?

A: This is a good question based on power system protection. And the chapter is numerical integration…

Q: How is the protective relay work?

A:

Q: Explain “hopscotching as an important process in troubleshooting a control system.

A: Many electrical circuit defects such as the switch or motor malfunctioning can be identified by a…

Q: list the probable causes if the armature does not release after the magnetic starter is…

A: For the control of 3-phase motors, the magnetic starter allows separation of the control circuit…

Q: Differentiate the used of Stepper motor over Servo Motor as applied for DC Source.

A: A stepper motor is to boot a digitally stepped motor, it takes a sequence of pulses to form it take…

Q: Can the Manual Motor Starter be used alone or only with a contactor?

A: Manual motor starter is used to switch motors ON/OFF manually and mainly provide electromechanical…

Q: What causes the overload of a starter to open and disable the power circuit?

A: The various causes by which the overload of a starter to open and disable the power circuit is as…

Q: Write a ladder program for two-motor control program, so that when the ignition switch is closed,…

A:

Q: 1. Design the circuit of light activated switch using LDR driven the Electromagnetic relay, the…

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

Q: |The nameplate rating of a motor is 150 hp, 600 volts, 205 A, 1700 rpm. The resistance of the shunt…

A:

Q: what safety feature does the combination starter provide that individual motor starting assemblies…

A: Solution- The safety feature is the primary requirement of any circuit or any device per their…

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: When power is applied to an off delay relay, what happens to the contacts connected to that

A: The explanation is as follows.

Q: One reason for the use of a reduced voltage starter would be to reduce the high starting current…

A: There are many ways by which we can reduce the high starting currents in motor

Q: Question 28 An industrial selector switch would most often have: O double break contacts. O more…

A: The solution is given below

Q: A selector switch and two - wire pilot device cannot be used to control a large motor directly but…

A: Selector switch and two-wire pilot devices are only used to control lower rating motors.

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.