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When starter handle moved to first stud a reduced voltage is applied
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What is a three point starter?
A three point starter is a device that is meant to help start a DC motor. A three point starter will start device without much starting current.
What is use of two point starter in electrical machines?
Ans- majit khan -we know starter is a safety device. Two point starter is used for Dc series motor. In two point starter all the thing's are connected in series.
What is the use of 4 point starter in motors?
in 4 point starter we use a protactive rasistance to control the speed of motar in 3point starter speed is uncontolled
What is the use of 4-point starter in motors?
The four-point starter eliminates the drawback of the three-point starter. In addition to the same three points that were in use with the three-point starter, the other side of the line, L1, is the fourth point brought to the starter when the arm is moved from the "Off" position. The coil of the holding magnet is connected across the line. The holding magnet and starting resistors function identical as in the three-point starter. * The possibility of accidentally opening the field circuit is quite remote. The four-point starter provides the no-voltage protection to the motor. If the power fails, the motor is disconnected from the line.
Difference between 3 point starter and 4 point starter?
1." the shunt connection in four point stater is provided separately form the line where as in three point stater it is connected with line which is the drawback in three point starter 2.In three point starter NVR (no voltage relay)is series with shunt if voltage falls certain value NVR De energized due to insufficient magnetic field and motor turned off. But in four point starter NVR energized directly from DC supply thus the draw back of 3 point starter rectified
What is the principle focus of a concave mirror?
The refleted ray are meeting/intersecting at a point on the principal axis of the mirror.This point is called the principal focus of the concave mirror
What is the principal argument for deficit spending?
Principal argument for deficit spending is the central point of controversy in economics.
What is the use of 3 point starter?
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Who is the first principal of south point school?
Satikanta Guha
Conjugated principal point?
The conjugated principal point is a term used in optics to refer to the point where the chief ray of a light ray bundle passes through the optical axis after being reflected or refracted by an optical system. It is also known as the focal point or image point. The position of the conjugated principal point depends on the characteristics and parameters of the optical system.
What is a dead spot on a starter for 1986 Chevrolet camaro?
a spot on the armature that is worn to the point of starter not functioning. a replacement re manufactured starter is in order.
Why 3 point starter is called 3 point starter?
Because it has three terminals L , F and A L - Line (connected to Supply) F - Field (connected to field of dc motor) A - Armature (connected to armature of DC motor) that's y it is called 3 point starter :)
