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Why damper is used?
Dampers are used to regulate the flow of air or gasses in ductwork and chimneys.Without dampers the flow in ducts would only be regulated by the fan speed, the flow in chimneys would be dependent on the developed draft, and neither would be controllable directly.
What is super elevation in road Construction?
Superelevation in road construction refers to the banking of a roadway at a curve to counteract the lateral acceleration experienced by vehicles. This design feature helps vehicles maintain traction and stability while navigating turns, reducing the risk of skidding. The degree of superelevation is determined by factors such as the curve's radius, design speed, and road conditions. Proper superelevation improves safety and enhances the overall driving experience.
What is efficient dwell time for import and export cargo terminal?
Dwell time depends upon various factor like custodian handling capacity, customs clearance speed, customs house agents efficiency in clearing customs cargo. quality of documentation and import planning. if all the documents are correct air shipment can be cleared in one day and sea shipment in 2-3 days.Kamal Jaincargomen logistics india private limited9849302009
What are pre-fabricated houses?
Pre-fabricated houses, or prefab homes, are structures that are manufactured off-site in sections or modules and then transported to the building site for assembly. This construction method allows for more efficient building processes, reduced waste, and often lower costs compared to traditional on-site construction. Prefab houses can be customized in design and layout, offering a variety of styles to meet different aesthetic and functional needs. They are increasingly popular for their sustainability and speed of construction.
What are advantages of precast concrete?
1- Very rapid speed of erection 2- Good quality control 3- Entire building can be precast - walls, floors, beams, etc. 1- Very rapid speed of erection 2- Good quality control 3- Entire building can be precast - walls, floors, beams, etc.
Why do you control the speed of constant speed dc shunt motor?
no it controls your anus
Which DC motor is constant speed motor?
Dc shunt motor is constant speed motor.Its speed is constant with armature current.This shunt motor is used in paper mills and drilling machines
Is 4 point starter used to start and control the speed of dc shunt motor with armature resistance control?
yes
What is constant speed DC motor?
Dc shunt motor is constant speed motor.Its speed is constant with armature current.This shunt motor is used in paper mills and drilling machines
Does DC motor run at a varying speed?
only shunt dc motors have varaible speed control. compound dc motors do however NT as much, plus they are just a mixture of series and shunt dc motors.
What are industrial applications of DC shunt motors?
Dc shunt motor is a constant flux and constant speed motor . So that it is used in centrifugal pumps ,machine tools ,blowers and fans etc.
What is DC shunt motor?
A shunt DC motor connects the armature and field windings in parallel or shunt with a common D.C. power source. This type of motor has good speed regulation even as the load varies, but does not have the starting torque of a series DC motor
why we use variable speed drivers in motor control units?
Variable speed drivers are necessary to be able to have different speed settings in a motor.
Why is the speed of dc shunt motor practically constant under the normal condition?
The speed of dc shunt motor is practically constant under the normal condition because the field flux is constant.
Is it possible to reduce speed of shunt motor?
For any dc shunt motor the speed is directly proportional to the armature voltage. hence if you vary the armature voltage by any means( using thyristor ) or static converters using conventional method( ward Leonardo system) surely you can increase or decrease the speed of the shunt motor. Manjunatha M
What will happen to a shunt motor if a shunt field coil opens while the motor is running under light load?
Motor will rotate at very high speed leading to destructionAnswer from Kinindia.com
Why flux control method is independent of the load but armature control method depends on load in shunt motor?
The flux control method in a shunt motor adjusts the field current to change the magnetic flux, allowing for speed control that is independent of the load because it directly influences the motor's torque generation capacity without altering the armature circuit. In contrast, the armature control method involves varying the armature voltage or resistance, which directly affects the motor's speed and torque output; thus, it is load-dependent. As the load changes, the armature current also fluctuates, impacting speed and performance, making this method reliant on the load conditions.
