1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elixir [45]
3 years ago
8

List one advantage and one disadvantage of the use of the commutator?

Engineering
1 answer:
Mariulka [41]3 years ago
3 0

Answer and  Explanation:

Commutator are used in DC machine commutator is mainly used for the reversing the direction of the current .It is connected to the armature of the DC generator or motor

ADVANTAGE OF COMMUTATOR The main advantage of the commutator in DC motor is to keep keep the direction of the toque always in the same direction by changing the current direction

DISADVANTAGE OF COMMUTATOR : The main disadvantage is due to the friction between the commutator and brushes there is a friction loss.

You might be interested in
Water flows through a pipe at an average temperature of T[infinity] = 70°C. The inner and outer radii of the pipe are r1 = 6 cm
Paul [167]

Answer:

The differential equation and the boundary conditions are;

A) -kdT(r1)/dr = h[T∞ - T(r1)]

B) -kdT(r2)/dr = q'_s = 734.56 W/m²

Explanation:

We are given;

T∞ = 70°C.

Inner radii pipe; r1 = 6cm = 0.06 m

Outer radii of pipe;r2 = 6.5cm=0.065 m

Electrical heat power; Q'_s = 300 W

Since power is 300 W per metre length, then; L = 1 m

Now, to the heat flux at the surface of the wire is given by the formula;

q'_s = Q'_s/A

Where A is area = 2πrL

We'll use r2 = 0.065 m

A = 2π(0.065) × 1 = 0.13π

Thus;

q'_s = 300/0.13π

q'_s = 734.56 W/m²

The differential equation and the boundary conditions are;

A) -kdT(r1)/dr = h[T∞ - T(r1)]

B) -kdT(r2)/dr = q'_s = 734.56 W/m²

6 0
3 years ago
How does the local economy influence behavior?
alexgriva [62]
For the general public, the main impact is the cost of living. The economy has a direct impact on our spending ability. An economic recession generally leads to an increased cost of living. ... The countries currency is also generally affected during a recession, which contributes to inflation of prices.
3 0
3 years ago
Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
lina2011 [118]

Answer:

REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEe

Explanation:

3 0
3 years ago
Many manufacturers currently offer SAE level _________ equipped vehicles
Pepsi [2]
Answer should be B.3 hopefully
7 0
3 years ago
Calculate the mean and median of the following
AfilCa [17]

Answer:

mean:24/5

ascending order:1,2,3,4,5,5,6,6,7,9

median:5

8 0
3 years ago
Other questions:
  • Cómo se llama el componente, que permite abrir o cerrar un circuito eléctrico
    8·1 answer
  • Determine the reactor volume (assume a CSTR activated sludge aerobic reactor at steady state) required to treat 5 MGD of domesti
    5·1 answer
  • Ronny wants to calculate the mechanical advantage. He needs to determine the length of the effort arm and the length of the load
    7·1 answer
  • Reverse Engineering: Structural Analysis
    14·1 answer
  • Please help I am give brainiliest
    9·1 answer
  • Draw the free-body diagram of the beam which supports the 80-kg load and is supported by the
    12·1 answer
  • Were women treated as equals to men in early aviation history?
    14·2 answers
  • Question 2
    12·1 answer
  • Which level of acceleration should you use when accelerating on a short highway entry ramp?
    11·1 answer
  • The ratio of the volume of charge admitted at n. T. P. To the swept volume of the piston is called.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!