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Explain Why it is important that the current in the coil of a motor changes direction every time the coil makes a half revulotion?
Wiki User
∙ 13y ago
due to commutation the current in the coil reverses
Wiki User
∙ 13y ago
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What are the two kinds electricity?
Perhaps you are referring to DC and AC? DC is direct current - current flows in a single direction. In AC (alternating current), the current regularly changes its direction.Perhaps you are referring to DC and AC? DC is direct current - current flows in a single direction. In AC (alternating current), the current regularly changes its direction.Perhaps you are referring to DC and AC? DC is direct current - current flows in a single direction. In AC (alternating current), the current regularly changes its direction.Perhaps you are referring to DC and AC? DC is direct current - current flows in a single direction. In AC (alternating current), the current regularly changes its direction.
Electric current changes direction repeatedly is called?
AC current (alternating current) like in a wall outlet
How both positive and negative half cycles of a ac voltage distributed through a single phase. can anybody please explain?
Single-phase ac has current that changes direction 100 times a second (if it's a 50 Hz supply). It only needs two wires to distribute a single-phase supply. Imagine it as a battery that is continually being reversed.
Is voltage negative or positive?
A negative or positive sign is applied to a current depending upon the direction in which it is moving, and in the case of alternating current, that direction changes 60 times per second. Viewed strictly as a form of energy, voltage is always positive. So far, physics has not detected negative energy.
Are staples required where cables run through holes in framing?
No, staples are not required where cables are run horizontally through holes in framing members. When the cable changes direction from horizontal to vertical runs from the last hole a staple is required, no greater distance that 16 inches from the hole.
Explain how momentum is conserved when a ball bounces against a floor?
The ball's momentum changes in one direction, the momentum of planet Earth in the opposite direction.
Explain why velocity changes while driving around a circular track even if the speed is constant?
Velocity consists of a speed and a direction. If any of the two changes, the velocity changes.
How do you explain that the pencil appears broken in the glass of water?
A ray of light changes direction when it gets out of the water, and into the air. This is called "refraction".A ray of light changes direction when it gets out of the water, and into the air. This is called "refraction".A ray of light changes direction when it gets out of the water, and into the air. This is called "refraction".A ray of light changes direction when it gets out of the water, and into the air. This is called "refraction".
What changes if someones speed or direction changes?
The acceleration changes if speed or direction changes
What are acceleration and velocity?
'Velocity' means the rate at which position changes, and the direction in which it changes. 'Acceleration' means the rate at which velocity changes, and the direction in which it changes.
Why at a constant speed if an object changes its direction it is considered to be acceleration?
Acceleration is a direction plus a speed. If either changes then the acceleration changes.
Does a wedge change the direction of the force?
when it changes its direction
What is important because is changes food energy into a form all cells can use?
Explain how respiration is the opposite reaction to photosynthesis
An object in circular motion is constantly acceleratingtrue or false?
True. It is accelerating because the velocity constantly changes. The velocity constantly changes because the direction changes - and a velocity is made up of a magnitude, and a direction.True. It is accelerating because the velocity constantly changes. The velocity constantly changes because the direction changes - and a velocity is made up of a magnitude, and a direction.True. It is accelerating because the velocity constantly changes. The velocity constantly changes because the direction changes - and a velocity is made up of a magnitude, and a direction.True. It is accelerating because the velocity constantly changes. The velocity constantly changes because the direction changes - and a velocity is made up of a magnitude, and a direction.
Why does a pencil look broken when placed in water?
Refraction will make the light change direction, when it changes from water to air.Refraction will make the light change direction, when it changes from water to air.Refraction will make the light change direction, when it changes from water to air.Refraction will make the light change direction, when it changes from water to air.
What is the deffinition of acceleration?
The rate at which speed changes, and the direction in which it changes.
Is there any change in the vector if there is change in angle?
Yes. The angle is the direction of the vector, so if the angle changes, the direction changes.
