Answer / pradeep

stepper motor

Answer / sanjay chaudhary

only stepper motor used

Answer / adesh bandhu

stepper motor becoz stepper motor rotation(step) can be
contoled accordingly.

Answer / sunil parmar,nirma uni.

BRUSHLESS DC MOTOR IS THE RIGHT ANSWER

THERE ARE LARGE STEP ANGLE REQUIRED IN CPU AS PER SPEED
REQUIREMET AND IT DEPENDS ON HEATING OF DIODES IN THE
CIRCUIT OF CPU......
SO, THE STEPPER MOTOR IS USED ONLY WHERE SMALL STEP ANGLES
ARE REQUIRED....

BRUSHLESS DC MOTOR HAS LESS LOSS,LOW POWER CONSUMPTION AND
HIGH PERFORMANCE THAN STEPPER MOTOR

Answer / ayan

I THINK BRUSHLESS DC MOTOR IS DA RIGHT ANSWER.

MANY OF MY FRIENDS CHOOSE STEPPER MOTORS FOR
THEIR CORRECT ANSWER.BUT AS STRPPER MOTOR BUT
BRUSHLESS DC MOTOR.

STEPPER MOTORS ARE USED FOR SAMLL STEP SIGNALS
WHERE AS BRUSHLESS DC MOTORS ARE USED AS PER SPEED
SIGNAL AS GENERATED IN CPUs.

Answer / sherrysethi

DC brushless is the most common type used. It is quiet, and has no tendencies to produce noise signals that could interfere with the computer's operation.

Answer / niloy datta

Both answers are right..
brushless DC motor is used for cooling purposes both in
motherboard and in SMPS.
stepper motor is used in hard disc ( it needs specific
control to aquire data from disc pallet)

Answer / mani

here lot of friends says stepper motor is preffered for CPU
but sherrysethi said Breshless DC motor is used i think
this is the correct answer if any doubts pls reffer the
site (http://www.dart-creations.com/business-
tree/auto/brushless_dc_motors.html)thank you

Answer / ree

high speed spindle motor

Answer / venkates

stepper motor with rotate

WHEN SINGLE PHASE SUPPLY AS 220V, WHY THE 3 PHASE- 4 WIRE MEASURED AS 440 VOLTS INSTEAD OF 660 VOLTS (220 VOLTS PER PHASE i.e 220x3 = 660 volts ).

1 Answers  

How the flights will be fly be fly without ground connection under raining with thunder lighting?

1 Answers  

how to calculate units consumption for a 12 hp motor /hr.

0 Answers  

How many types of AC current?

8 Answers  

what is the current setting for different relay protection for transformer .

0 Answers   Crompton Greaves,

describe the fully control circuit diagram of ac drives

0 Answers  

Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.

0 Answers   DAE,

If a generator of generating station produces 100MW rated output then what will be the rating of the step-up transformer connected to it?

5 Answers  

what are the types used for alternator earthing,what will happen if more than two alternator is working in parallel with each having own system earthing.is there any possibility for circulating current in between two system.

3 Answers   BEL,

Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

0 Answers   Piramal Healthcare,

if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.

0 Answers  

What are the protections to be used for Generator?

5 Answers