why celing fan is running in anti clock wise and table fan
is running in clock wised?
Answers were Sorted based on User's Feedback
Answer / bijay kumar pandey
This is mainly because of the diversity in their working principles. Every fan needs a motor that allows rotational motion.
Taking into consideration the structure of a motor, there are two major parts - The motor itself and the armature. Out of these two parts, one part is always stationary while the other moves around it's axis allowing rotation of any object that is attached to it.
Ceiling fans have a stationary armature and the motor moves in the counter-clockwise direction. Since the blades of the fan are attached to the motor, the ceiling fan rotates in an anti-clockwise direction.
It is exactly the opposite for a table fan. The motor is stationary and the armature moves to give motion to the fan blades. Because of Newton's 3
law of motion that states - "Every action has an equal and opposite reaction.", the stationary motor gives the armature a push in the opposite direction. This causes the blades of the table fan that are attached to the armature, to move in the clockwise direction.
Is This Answer Correct ? | 1 Yes | 0 No |
Ceiling fan is made to run anticlockwise when it is used for ' cooling- air' purpose .
Is This Answer Correct ? | 0 Yes | 4 No |
what is the ms flat constant for calculating earth mat design calculation?
how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64
why the Current transformers secodary is shorted to ground (In metering and Protection)
Technical requirement of Copper earthing over GI earthing.
Explain why inductance of the iron cored coil changes with current?
What is a dc motor?
Please brief what is sinewave
In a single how much maximum current and watts using
why 1.7Uo for HV cable Hi pot test?IE standard why?
what is rating providing of contactor,relay,fuse unit for motor output power
Could Please Explain briefly. Why used stabilizing resistance series with High impedance bus differential protection relay.
following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?