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
FinnZ [79.3K]
3 years ago
7

A control system that is used in elevator system

Engineering
1 answer:
ozzi3 years ago
4 0

Explanation:

Elevator controller

An Elevator controller is a system to control the elevators, either manual or automatic. The controller usually tune down the voltage between 12V to 24V to the controlling system, Only the motor needs 3-phase power supply.

https://elevation.fandom.com › wiki

Elevator control system | Elevator Wiki | Fandom

You might be interested in
Given the system of equations−3x2+7x3=2,x1+2x2–x3=3,5x1−2x2=2(a). Compute the determinant. (b). Use Cramer’s rule to solve for t
34kurt

Answer:

(x1,x2,x3)=(0.985507,1.463768,0.913043)

Explanation:

<em>note: </em>

<em>solution is provided in word document please find the attached document.</em>

Download docx
5 0
3 years ago
Consider the problem of oxygen transfer from the interior lung cavity, across the lung tissue, to the network of blood vessels o
aalyn [17]

Answer:

See attached images

8 0
4 years ago
Determine the length of the cantilevered beam so that the maximum bending stress in the beam is equivalent to the maximum shear
Rus_ich [418]
The shear stress at any given point y1 along the height of the cross section is calculated by: where Ic = b·h3/12 is the centroidal moment of inertia of the cross section. The maximum shear stress occurs at the neutral axis of the beam and is calculated by: where A = b·h is the area of the cross section.
3 0
4 years ago
A fluid of density 900 kg/m3 passes through a converging section of an upstream diameter of 50 mm and a downstream diameter of 2
NISA [10]

Answer:

Q= 4.6 × 10⁻³ m³/s

actual velocity will be equal to 8.39 m/s

Explanation:

density of fluid = 900 kg/m³

d₁ = 0.025 m

d₂ = 0.05 m

Δ P = -40 k N/m²

C v = 0.89

using energy equation

\dfrac{P_1}{\gamma}+\dfrac{v_1^2}{2g} = \dfrac{P_2}{\gamma}+\dfrac{v_2^2}{2g}\\\dfrac{P_1-P_2}{\gamma}=\dfrac{v_2^2-v_1^2}{2g}\\\dfrac{-40\times 10^3\times 2}{900}=v_2^2-v_1^2

under ideal condition v₁² = 0

v₂² = 88.88

v₂ = 9.43 m/s

hence discharge at downstream will be

Q = Av

Q = \dfrac{\pi}{4}d_1^2 \times v

Q = \dfrac{\pi}{4}0.025^2 \times 9.43

Q= 4.6 × 10⁻³ m³/s

we know that

C_v =\dfrac{actual\ velocity}{theoretical\ velocity }\\0.89 =\dfrac{actual\ velocity}{9.43}\\actual\ velocity = 8.39m/s

hence , actual velocity will be equal to 8.39 m/s

6 0
3 years ago
The inside temperature of a wall in a dwelling is 15°C. If the air in the room is at 21°C, what is the maximum relative humidity
Sveta_85 [38]

Given:

Wall's inside temperature, T_{wa} = 15^{\circ}C

Room air temperature,  T_{air} = 21^{\circ}C

Solution:

To calculate percentage max relative humidity, we make use of steam table for saturated pressure of wall and air:

From steam table:

At T_{wa} = 15^{\circ}C:

P_{wa(sat)} = 1.7057 kPa

At  T_{air} = 21^{\circ}C:

P_{air(sat)} = 2.487 kPa

Now,

% Relative Humidity (RH)_{max} = \frac{P_{wa(sat)}}{P_{air(sat)}} \times 100

(RH)_{max} = \frac{1.7057}{2.487}\times 100

(RH)_{max} = 68.58%

Therefore, max Relative Humidity of the air before the occurrence of condensation in wall is 68.85%

8 0
3 years ago
Other questions:
  • During the collision, is the magnitude of the force of asteroid A on asteroid B greater than, less than, or equal to the magnitu
    11·2 answers
  • What is the name for a part of a window that joins two windows into a single unit?
    12·1 answer
  • Which of the following can be used to create hydrogen? a. gasoline c. carbon monoxide b. carbon dioxide d. ammonia
    10·1 answer
  • Light energy produces the only voltage in a solar cell. (a)-True(T) (b)- false(F)
    9·1 answer
  • Snoopy is inflated for the Macy’s Thanksgiving parade with 50,000 L of He at 25 oC and 1.2 atm. What is the percent decrease in
    15·1 answer
  • A fiberglass composite is composed of a matrix of vinyl ester and reinforcing fibers of E-glass. The volume fraction of E-glass
    10·1 answer
  • D 4.37. Assuming the availability of diodes for which vD = 0.75 V at iD = 1mA, design a circuit that utilizes four diodes connec
    14·1 answer
  • Which is true about the workplace of Construction workers?
    15·2 answers
  • A fuel oil is burned with air in a furnace. The combustion produces 813 kW of thermal energy, of which 65% is transferred as hea
    13·1 answer
  • Please help i really don't understand.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!