Answer / hossain

In an armature based dc motor, it will rotate to and fro.
After roatating 180 degree, it will rotate back again 180
degree and so on.

Answer / surendra

dc motor works on principal of f.left hand rule and force is given by f=BIL.B IS PROPORTIONAL TO voltage if supplied voltage is low machine may not get required force to rotate, hence it won't rotate

Answer / k.prakashchandra

In case of shunt motor ,due to the inductance ,the current
will be too low to overcome the inertia and it may act as a
winding warmer.In series motor, rotor may rotate very slowly.

In a three-phase full converter, output voltage pulsates at frequency of a. f b. 2f c. 3f d. 6f

2 Answers  

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What are the uses of stepper motor?

0 Answers  

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In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?

0 Answers   Aegis,

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how to determine Sq.mm size of finolex power cables.

0 Answers   Finolex,

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th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.

0 Answers   HMC,

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explain the f=np/120 this equ.how to come 120

3 Answers   Jayaswal Neco Industries,

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According to general circuit diagram of 1-Phase t/f , why the primary is not get short circuited ,even though the supply terminals both are directly connected through primary winding?

4 Answers  

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how does induction motors works.

1 Answers  

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) why transformer cannot rotate though the principle behind induction motor is similar to a transformer

3 Answers  

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what is the reason for choosing DYn11 in transformer, why not DYn12 or something else

1 Answers  

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Whis machine is having higher efficiency Transformer or Generator

2 Answers  

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what is the proximity & ferranti effects can you explain to me

1 Answers   APTransco,

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