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DC Motor vs Universal Motor - Difference between DC Motor and Universal Motor - Duration: 2:50.
DC motor works only with DC supply whereas universal motor works with both AC and DC.
Universal Motor only for AC and DC both another, It is a commutated series-wound motor, where
the stator's field coils are connected in series with the rotor windings through a commutator.
It is often referred to as an AC series motor.
In this video we will go to learn difference between DC Motor and Universal Motor.
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A DC motor is any of a class of rotary electrical machines that converts direct current electrical
energy into mechanical energy.
The most common types rely on the forces produced by magnetic fields.
Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic,
to periodically change the direction of current flow in part of the motor.
DC motors were the first type widely used, since they could be powered from existing
direct-current lighting power distribution systems.
A DC motor's speed can be controlled over a wide range, using either a variable supply
voltage or by changing the strength of current in its field windings.
Small DC motors are used in tools, toys, and appliances.
More information about the DC motor, so visit us our web site www.learningengnr.com
The universal motor is so named because it is a type of electric motor that can operate
on AC or DC power.
It is a commutated series-wound motor where the stator's field coils are connected in
series with the rotor windings through a commutator.
It is often referred to as an AC series motor.
The universal motor is very similar to a DC series motor in construction, but is modified
slightly to allow the motor to operate properly on AC power.
This type of electric motor can operate well on AC because the current in both the field
coils and the armature (and the resultant magnetic fields) will alternate (reverse polarity)
synchronously with the supply.
Hence the resulting mechanical force will occur in a consistent direction of rotation,
independent of the direction of applied voltage, but determined by the commutator and polarity
of the field coils.
Universal motors have high starting torque, can run at high speed, and are lightweight
and compact.
They are commonly used in portable power tools and equipment, as well as many household appliances.
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Audi RS5 Coupé: Zu wenig Kante! - Vorfahrt [with subtitles] | auto motor und sport - Duration: 10:32.
I hate this wind!
If only someone knew how long it takes for me to do my hair every morning.
Okay, Andorra, a land as wavy as the cellulite...
No, I don't know....
Are we already running?
Well, then!
All right! I am a bit pissed I must say
because the press release on the new RS5 says things I don't really understand.
For example, it should be a high-performance coupe and a Gran Turismo at the same time.
And I wonder: Is this even possible?
And, I also wonder: why is Audi switching the RS5 to be a Gran Turismo?
Because I have the fear they want to escape the competition.
If the M4 for example would be faster around a track than the RS5, you will probably hear:
Well, the RS5 is a Gran Turismo.
But what the RS5 is really all about, I'm about to find out.
The appearance actually suggests that there is lots of potential.
With 275 section tires, lowering, track broadening and the black package, the guy right here says:
Go away, I'm faster!
My highlight: the wheel arches in the Ur-quattro style.
But for growing the arches of the A5 that wide,
you have to transfer 80.900 € first.
This is, of course, the heart of the new RS5.
It says V6 right here in large letters.
2.9 liters. When I heard that, my alarm immediately came on and I thought:
How much money does Audi currently have to develop besides the 3 liter TFSI a 2.9 liter engine.
But the thing is quite simply explained.
On the one hand, it's already in the Panamera S, of course,
and it is not that it was completely new developed from the ground up.
Rather, they have strengthened everything a bit to be able to cope with the power of the BiTurbo.
Among other things, the stroke has been shortened to 86 millimeters,
which results in a smaller displacement from 3 liters to 2.9 liters.
This simply means there is a relative of the Audi S5 engine under the hood.
The athletic brother in law develops 450 HP and 600 Newton meter of torque.
By the way, Audi has lent the unit to Porsche and not vice versa.
Now everybody wake up again please.
For now comes the part where I drive the forester green hunting coupe.
And then let's see what this Gran Turismo thing is all about.
I'm driving now with 55 kph (34mph) and I have to say I do not hear the engine.
But I also do not really notice any of the rolling noise and general environmental influences.
So it's actually just a very comfortable car right now.
Okay so it's comfortable:
But does it need to be comfortable?
I fear this question can only be answered in the commentaries of common video platforms -
not.
Actually I don't have a problem with saying: Okay were making a GT.
But let me put it this way:
For a GT I'm missing at least two cylinders and a GT has four seats, two of which you cannot use.
This is for me a classic feature of a Gran Turismo.
With the RS5 Coupé, however, you have quite good space in the back as an adult.
So purely according to the definition, the RS5 for me cannot be a Gran Turismo.
And I also find in the segment where he competes with M4 and C63 Coupe
I do not know why Audi would like to withdraw this sportiness now and says:
Okay we put a Gran Turismo on the road here.
Because the RS5 still has the RS logo on the back:
"racing"
And saying then: But this is now a GT - does not open up for me. "
Maybe you have to remember the predecessor to be able to understand the step towards the GT.
Because it stood out with a setting, that made clear from the beginning that this is a sports car.
So the chassis is actually very comfortable, especially compared with the predecessor.
He takes bumps very well, the suspension works great such as the damping.
My test car is also equipped with the Dynamic Ride Control.
In corners, there is also a roll compensation via the adaptive damper adjustment.
And I don't really feel much rolling right now.
However, I'm not driving very fast at the moment. I'm much more cruising.
And if you are into cruising along and want to buy an RS5 for that cause,
then it can definitely do it - I have to give it that.
Please don't get wrong:
The car drives really great under normal operation and is a perfect long-distance bomber,
but, and this may seem weird:
I don't want an RS5 to be like that.
And the same problem I have with the sound, because he shows not enough character.
And it seems to me as if the engine is totally muted.
The engine sound does not get into the cabin at all,
which I find very unfortunate.
Because it's a sporty car and I want to hear the characteristics of the engine.
And over the sound, I also know in what conditions I currently am
and it simply conveys a much better feeling of sportiness when I can hear the car well.
And I cannot hear it at all.
Well "not at all" is exaggerated,
but too little for my RS taste.
For Audis redemption:
the RS5 must work according to stricter noise regulations than the competitors,
because it is the youngest.
Now, in dynamic mode, the exhaust flaps are permanently open.
The gear changing strategy has changed.
But the sound?
Yes, he farts a bit, I think that's good.
Well,
there is a bit of character coming up here.
When switching down, he farts gloriously,
and if it smells like gasoline, then everything is great!
But it's probably all
programmed with the different driving modes. And is meant to be like that.
It seems a bit artificial to me.
And in here it has become louder,
but it is more a booming I have to say, unfortunately.
Do you hear that? I'm driving in 5th gear, 2500 rpm.
And it is such an undefined noise that comes here.
So the sound is not what I like.
And that is my personal opinion.
I know all manufacturers program their driving modes in a certain way,
but sometimes feels natural, while sometimes it doesn't.
And the wild banging and farting after before hardly anything was noticeable is weird.
Besides the sound, of course, one thing is very important:
How does this beast go?
So watch, 2nd gear 50 kph.
Yes and there I have to say:
It pushes like hell!
600 Newton meter punsh you in the back,
450HP and than what you see is what you get here.
And it delivers power very linearly.
It pushes you from head to toe just brutally in the seat if you want that.
The engine is really a true splendor.
Hot V, fast chargers, that's all great.
And you can hear those things spinning!
For the competitors this engine could be a real struggle.
If not the RS5 would drive the way it drives.
I have to say for the first time and for everyone who has already sat in a sporty Audi,
the car feels stupidly safe.
So you can do very little wrong here because there is always traction
and you have the feeling to be always in control.
If in the background the ESC plays any games, it is not noticeable.
Let's drive a bit more dynamic here.
Yes, and the quattro always gives traction
and the steering feel is also amazingly good, I find that totally precise.
Nice and direct and not too pointed as well
and I even have the feeling of feedback.
Good news for all DCT-Haters:
the dual clutch transmission is gone.
I never had problems with it,
but 600 newton meter can only be handled by the 8-speed torque converter.
I don't feel no difference to a dual clutch transmission,
it switches very quickly and without tractive power interruption,
at least that's what I feel.
What I have to say is that the shifting strategy is sometimes not quite right for me.
especially in the S-lane.
It remains an infinitely long time in a low gear although I give only very gently gas.
But otherwise, the transmission in here works wonderfully.
I know in S it holds the gears longer,
but I felt often that this was now much too long.
What remains as a conclusion?
I feel almost bad,
because many smart people have worked for a long time on the RS5
and then it's me as John Doe and find that not to be good.
But again:
For me, this is just not RS good.
Too little edge, too little challenge,
way too much perfect long-distance car.
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