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mestny [16]
3 years ago
10

What is the purpose of the commutator in an electric motor?

Physics
1 answer:
Alex777 [14]3 years ago
8 0
<span>Commutator is the moving part of the electric motor and periodically reverses the current direction between the rotor and the external circuit.One end of the coil is attached to each half of the commutator.  Commutator are used so when electricity flows through the circuit, the coil will rotate continually in the same direction.</span>



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A pneumatic system consists of several identical 1.5 inch diameter cylinders to lift 450-pound pallets in a warehouse. the gauge
DerKrebs [107]
The applicable equation:

P = F/A

P = pressure
F = Force or weight
A = surface area

Pressure on each cylinder = (W/n)/A
Where n = number of cylinders. Additionally, pressure in the reservoir is equivalent to the pressure in each cylinder.
Net pressure =  75 - 14.7 = 60.3 psi

Therefore,
60.3 = (W/n)/A = (450/n)/(πD^2/4) = (450/n)/(π*1.5^2/4) = (450/n)/(1.7671)
60.3*1.7671 = 450/n
106.03 = 450/n
n = 450/106.3 = 4.244 ≈ 5

The number of cylinders is 5.
3 0
3 years ago
Name and state the rule to find out the direction of magnetic field inside and around the loop.
goldfiish [28.3K]

Answer:

The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.

Explanation:

5 0
3 years ago
) a 1.0 kilogram laboratory cart moving with a velocity of 0.50 meter per second due east collides with and sticks to a similar
ZanzabumX [31]
Momentum would be the same before and after the collision
 Before the collision:
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 After the collision
 velocity = 0.25m / s
 1 * 0.25 + 1 * 0.25 =
 0.25 * (1 + 1) =
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 answer
 the same before and after the collision
4 0
4 years ago
Read 2 more answers
2.4 What is the radiation error of a temperature measurement?<br>I​
Airida [17]

Answer:

diameter     of       the  wire   =  0.05  in  =0.05 /12   =4.167 *10 ^-3  ft

area   of cross  section    of the  wire  = A =  22/7 *  ( d /2 ) ^2  =0.786 *  (  4.167 *10 ^-3 ) ^2  =1.365 *10 ^-5  ft2  

E  =...

Explanation:

5 0
3 years ago
A truck exerts 2700 N of force on a car that is stuck in the mud, and does not move. How much work has the truck performed?
vova2212 [387]

Answer:

zero

Explanation:

although force was applied as long as there's no movement ,no work has been done

mathematically;work=force×distance

work=2700×0

work=0J

hope I helped

please like and Mark as brainliest

5 0
4 years ago
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