Answer / iamdon

Dear Amit,
Your statement is right except the last line.As long a
machine is in motoring mode it will only take electrical
energy as input not the mechanical enegry.

In the question asked, the intention was to find the
difference on a practical ground.We all are very much aware
of the difference on various techanical grounds but a
laymen would not understand the terms like stator,magnetic
field,armature etc.For them FULLY CLOSED and SEMI CLOSED
are quite easy to interprete.Hope now you agree.

Author:arbelectbit@yahoo.com

Answer / iamdon

Not in all cases but we can surely say in some cases.

Generators are always handled by persons having experience
in the field of electircal machines.It is generally established
at dust free places.So it MAY BE SEMI OPENED like structure.
(Remember the generators hired for Indian marriage ceremony.You
can able to see the rotating parts).

Motors are handled by persons from all walks of life and
established without concerning the dust level in the vicinity.
For running a motor,one need not require a knowledge of
electrical machines.Have you ever faced a situation when motor
seller asked you: Do you know about electrical machines? before
selling you a motor.So motor construction is ALWAYS FULLY
CLOSED to ensure safety and proper protection aganist dust
during its rugged operation.

We can distinguish between motor and generator on the
possibilities of ALWAYS FULLY CLOSED and MAY SEMI CLOSED
appearance respectively provided motor is not opened for
repair purposes and generated is not newely purchased.

Author:arbelectbit@yahoo.com

Answer / amit

Generator always need some source for its operation (such as
petrol or diesel), but motor takes only electrical energy or
mechanical power to run.

Whether the LIGHTNING is AC or DC?

9 Answers   Bhel, IEEE,

---

sir am giving jspl exam on 19th oct . i belong to eee, so plz send previous question papers ..........to dis id abhilash203@gmail.com

0 Answers  

---

Does increase or decrease of reactive load affects the Voltage.

5 Answers   Nalco,

---

why voltage will come different in phase?

3 Answers   HP, Vissa,

---

how to compare with Relay settings for HT&LT panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps

0 Answers  

---

we know that dc motors are more superior then three phase induction motors in torque generation though they are not much used in industries why?

5 Answers   Essar, L&T,

---

what are the effects of variations in frequency when you are connected to national grid??

1 Answers  

---

What will happen if " not connecting the neutral point to ground of diesel generator output (380 V)", also if someone touched one phase without isolation from ground during the A/M condition what will happen to him?

3 Answers  

---

Approach of a cooling tower is the difference between temperatures of what factors?

0 Answers   Blue Star,

---

what is relation of rpm with Power supply? rpm directly Proposational to power ?

2 Answers  

---

We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.

0 Answers  

---

what is bus pt and what is the function of it ???

8 Answers   TATA,

---