Which type of A.C motor is used in the fan?

1 Answer

Answer :

 It is Single Phase induction motor which mostly squirrel cage rotor and are capacitor start capacitor run.

Related questions

Description : Which type of A.C motor is used in the fan (ceiling fan, exhaust fan, pedestal fan, bracket fan etc) which are find in the houses?

Last Answer : Its Single Phase induction motor which mostly squirrel cage rotor and are capacitor start capacitor run.

Description : In the illustration if the compressor fails to start but the condenser fan motor is running the problem is _______. EL-0042 A. no power between L1 and L2 B. the yellow wire is open at the freezer temperature control switch C. the overload is open D. the blue wire from the defrost heater is open

Last Answer : Answer: C

Description : In the illustration if the compressor fails to start but the condenser fan motor is running the problem is _______. EL-0043 A. no power between L1 and L2 B. the yellow wire is open at the freezer temperature control switch C. the overload is open D. the blue wire from the defrost heater is open

Last Answer : Answer: C

Description : A ceiling fan uses (A) split-phase motor. (B) capacitor start and capacitor run motor. (C) universal motor. (D) capacitor start motor.

Last Answer : Ans: D To give starting torque and to maintain speed.

Description : Why the electric motor of a fan with backward curved blades is never got overloaded under any condition ?

Last Answer : The maximum power is consumed at about 70% of maximum flow in case’of fan with backward blades. For higher flow, power consumption gets lower.

Description : For process boilers , combustion air fans must meet the following requirements ___ a. The fan motor shall be driven by a variable speed drive b. The fan motor shall include controls that limit the fan motor demand to no more than 30 %. c. Both a. & b. d. None of the above

Last Answer : c. Both a. & b.

Description : The electric motor in hybrid car can also act as_____ • A generator • A Fuel pump • Cooling fan • Compressor

Last Answer : • A generator

Description : State suitable single phase motor for following applications: (i) Table fan (ii) Mixers and Grinders

Last Answer : Application Suitable Single Phase Motor Table Fan 1) Capacitor split phase motor 2) Capacitor start capacitor run motor Mixers and Grinders 1) Universal motor 2) A.C. Series motor

Description : State the function of following parts of slip ring induction motor: (i) Slip ring (ii) Fan (iii) Brushes (iv) Frame

Last Answer : Sr. No. Name of part Function 1 Slip ring 1) The rotor winding terminals are permanently connected to the slip rings. 2) Connects external resistance to rotor circuit through ... It provides mechanical support to the entire internal parts of motor. 2) Protects the inner parts.

Description : In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve (A) low starting torque (B) quick acceleration (C) high efficiency (D) reduced size

Last Answer : In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve quick acceleration

Last Answer : In a ceiling fan employing capacitor run motor secondary winding surrounds the primary winding.

Last Answer : The wattage rating for a ceiling fan motor will be in the range 50 to 150 W .

Description : which motor is use in ceiling fan?

Last Answer : Capacitor start capacitor run induction motor

Description : Which of the motors for the devices listed below is fitted with an instantaneous overload relay? A. Fan B. Pump C. Winch D. Machine tool

Last Answer : Answer: C

Description : Why the Direction of Rotation of a TABLE Fan & CEILING Fan is different?

Last Answer : In table fan rotor is rotating part, but in ceiling fan stator is rotating part, so the direction of rotation is different. Transformer is not rotating because for rotating magnetic ... degrees where as in transformer there is no physical displacement of 120degrees hence transformer cannot rotate.

Description : Why we use a capacitor in an electric fan?

Last Answer : 1. Capacitor is used for both starting the electric fan and improving power factor. 2. The voltage taken by the fan during running has lagging power factor and in order to run the fan we need ... gives a quick start to the instrument otherwise we have to use a very high voltage to the instrument.

Description : After servicing a single phase fan it was found to run in reverse direction. What could be the reason?

Last Answer : The connection to the starting/ auxiliary winding would have reversed.

Description : What kind of motors used in ceiling fan and wet grinders?

Last Answer : Ceiling fan # Capacitor start and capacitor run single phase induction motor, wet grinders# Capacitor start capacitor run single phase induction motor.

Description : In ceiling fan the angle between auxiliary winding a main winding is a) 0 deg b) 90 deg c) 180 deg d) 360 deg

Last Answer : Ans: 90 deg

Description : The basic type of D.C. motor speed control where a generator armature directly feeds the motor armature and the motor and generator fields are excited by a separate D.C. source is called ___________________. A. Burmeister-Wain B. Ward-Leonard C. Sperry-Rand D. Atlas-Copco

Last Answer : Answer: B

Description : In the illustrated motor, roller bearings are used because __________. EL-0001 A. of their ability to absorb moderate thrust loads B. they electrically insulate the rotor from the frame reducing ... clearance between the rotor and stator is generally as close as mechanical tolerance will permit

Last Answer : Answer: D

Description : What type of electric motor is commonly used to start small auxiliary diesel engines? A. synchronous B. series C. shunt D. cage

Last Answer : Answer: B

Description : In a three-phase, squirrel-cage type, induction motor the rotating magnetic field is established by the _____________. A. current induced in the rotor windings B. application of a three-phase voltage ... caused by the induced current in the squirrel-cage bars with the magnetic field of the stator

Last Answer : Answer: B

Description : The speed of a wound-rotor induction motor _____________. A. will be fixed by the number of field poles B. can be varied by a rheostat-type control C. can only be synchronous speed at full load D. can only attain synchronous speed at no load

Last Answer : Answer: B

Description : Which type of AC single-phase motor will also operate on direct current? A. Split-phase B. Series-wound C. Shaded-pole D. Repulsion-start

Last Answer : Answer: B

Description : One function of the movable cams in a drum-type motor controller is to _____________. A. regulate the speed of the motor B. maintain resistance contacts in clean condition C. insulate the operating handle D. limit the amount of load put on the motor

Last Answer : Answer: A

Description : In a faceplate-type motor starter, the starting arm is held in the 'OFF' position by a/an _____________. A. cotter pin B. magnet C. electrical circuit D. strong spring

Last Answer : Answer: D

Description : A three-phase, induction-type motor experiences an open in one phase. Which of the listed automatic protective devices will prevent the machine from being damaged? A. Overspeed trip B. Thermal overload relay C. Three-pole safety switch D. Magnetic blowout coil

Last Answer : Answer: B

Description : The rotor slots of a repulsion-type motor are generally skewed (placed nonparallel to the rotor axis) to _________. A. produce a constant starting torque B. permit a greater air gap with the starter C. permit a smaller air gap with the starter D. reduce eddy current losses

Last Answer : Answer: A

Description : The speed of a three-phase squirrel-cage induction-type motor operating in a fixed frequency system is varied by changing the _____________. A. number of phases to the motor B. number of stator poles C. locked rotor current D. resistance of the rotor winding

Last Answer : Answer: B

Description : In a 15 HP induction-type motor with a cage rotor, the current required at standstill to produce starting torque is approximately ____________. A. half the full load current B. equal to the full load current C. five times the full load current D. ten to twenty times the full load current

Last Answer : Answer: C

Description : Time delayed or delayed action-type fuses are designed to _____________. A. prevent grounds in branch circuits B. prevent opens in motor circuits C. permit momentary overloads without melting D. guard lighting and electronic circuits

Last Answer : Answer: C

Description : what is the type of induction motor used in wet grinders?

Last Answer : Capacitor start capacitor run single-phase induction motor.

Description : Which type of motor is used in trains, what is the rating of supply used?

Last Answer : A:Dc series is in the trains to get high starting torque while starting of the trains and operating voltage is 1500v dc.

Description : List out the methods of speed control of cage type 3-phase induction motor?

Last Answer : a) By changing supply frequency b) By changing the number of poles c) By operating two motors in cascade

Description : What type of motor starting adopted in MCC?

Last Answer : DOL (direct on line) starter.