Why does the power consumed is always constant even if a fan
speed is altered?
Answer Posted / rk
Here our purpose is to control fan speed. By varying the
voltage applied across the fan motor ,we are changing the
speed i.e. Voltage-speed control.The Balance voltage should
apply across the resistnce of the regulator,in that the
power is wasted in the form of heat energy. So overall
Power consumption is same whatever be the speed of the fan.
Power=(Voltage across Motor + Voltage across regulator)* I
Is This Answer Correct ? | 21 Yes | 7 No |
Post New Answer View All Answers
Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?
If a 3 phase induction motor is in off condition in the conveyor and rotor of the motor keeps moving with the conveyor than the resistance of windings of motor varies. why is it so ??
What is the different between digital phase converter and ordinary phase converter?
How we can calculate the consumption in kwh of motor on basis of kw @100% load, @50% load & @ no load.
two way ckt diagram can be drawn by how many ways? give diagram
What is time invariant system?
"TRANSFORMER MODELING AND ANALYSIS" MEANS WHAT AND WHICH TOPICS U READ IN THIS
What is block diagram?
What is the method of estamating of cable, CB,MCB ?
What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?
how is calculated the quantity of weight in hot test xlpe?
explain the what is a drive ? 0 4 which type motor r use in the celling fan..... PCB plannet 2 13 If stator & rotor of a 3-phase induction motor have different no. of poles, will the motor run or not?? types of drives Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only. ACC 1 41 how the 3phase induction motor is running in 2phase supply with help of capacitor? 1 33 what is the actual difference betwen constructional details and constructional features? 1 20 how does commutator convert a.c to d.c?
Difference between RCCB, RCBO and ELMCB.
In single phase ac ups supply when current is measured with tong tester neutral current is found more than phase current.What is the reason?
what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?