Answer / soumen koley

in both ceiling & table fan single phase induction motor is
used. the main diff b/w them is in table fan rotor is inside
the stator. and in ceiling fan rotor is out side the stator.
but why the cost is varied, i am not sure.

Answer / john marsh

Split phase Motor(Continuous Running with Capacitor)

Answer / amit mishra

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 opposite for a table fan. The motor is stationary and the armature moves to give motion to the fan blades.According to Newton's third law 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 clockwise direction.

Answer / yogisahu

In table fan armature
winding is rotor but in
celling fan armature winding
is stator
i think the cost of table fan is
costly because construction
is complicated than celling fan

Answer / jyothis prasad t

Single phase induction motor is used in ceiling fan,that's
why a capacitor provide for it to get the starting torque.
Refer two field revolving theory for reference.i don't sure
about table fan i think the previous answer is correct ie.
universal motor.

Answer / l.raghuraman15

still searching for the answer. my friends told that
universal motor is used in table fan which can operate on
both AC and DC current, whereas in ceiling fan induction
motor is used which can operate only in dc current.

if we convert kw into Ampers,which one formula use by us,pls tell me?

9 Answers   ABB, Essar,

what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?

0 Answers   Toshiba,

wHAT IS CAPACITANCE LATCHING? hOW TO CALCULATE CAPACITANCE LATCHING? hOW TO SOLVE THE PROBLEM IF CAPACITANCE LATCHING APPLIED?

0 Answers  

1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.

0 Answers  

What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

1 Answers  

I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

0 Answers  

In ACS 1000 drive we used 12 pulse convertor.Why dont used 6 pulse or 3 pulse convetor

1 Answers  

What is the speed of electrical supply?

3 Answers  

what is the difference b/w KVA and KW? the transformer are mentioned KVA rating and the loads are mentioned KW.why?

2 Answers  

plz tell me in detail about c.t. and p.t. ?

3 Answers   Reliance, SCL,

what should we do when the CT secodary gets open? how do we short circuit it? using tester or screw driver? not dangerous?

6 Answers  

What is the meaning of dedicated earthing?

0 Answers   Dabur,