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3 years ago

In bathroom design, what two electrical safety features must always be followed

1 answer:

3 0

1. Electrical switches should not be accessible from the tub or shower
2. Ground fault circuit interrupter (GFCI) receptacles must be used

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Steam enters a heavily insulated throttling valve at 11 MPa, 600Â°C and exits at 5.5 MPa. Determine the final temperature of the

7nadin3 [17]

Answer: the final temperature of the steam 581.5 °C

Explanation:

Given that;

P₁ = 11 MPa

T₁ = 600°C

exit at; P₂= 5.5 MPa

Now from superheated steam table( p=11 MPa, T=600°C)

h₁ = 3615 kJ/kg

h₁ = h₂ ( by throttling process and adiabatic isentholpic )

from saturated steam table at; ( h= 3615 kJ/kg, P= 5.5 MPa )

Temperature = 581.5 °C

Therefore the final temperature of the steam 581.5 °C

8 0

3 years ago

The vertical force P acts on the bottom of the plate having a negligible weight. Determine the shortest distance d to the edge o

Greeley [361]

Answer:

The shortest distance d to the edge of the plate is 66.67 mm

Concepts and reason

Moment of a force:

Moment of a force refers to the propensity of the force to cause rotation on the body it acts upon. The magnitude of the moment can be determined from the product of force’s magnitude and the perpendicular distance to the force.

Moment(M) = Force(F)×distance(d)

Moment of inertia ( I )

It is the product of area and the square of the moment arm for a section about a reference. It is also called as second moment of inertia.

First prepare the free body diagram of sectioned plate and apply moment equilibrium condition and also obtain area and moment of inertia of rectangular cross section. Finally, calculate the shortest distance using the formula of compressive stress (σ) in combination of axial and bending stress

Solution and Explanation:

[Find the given attachments]

6 0

4 years ago

A horizontal rigid bar ABC is pinned at end A and supported by two cables at points B and C. A vertical load P 5 10 kN acts at e

BARSIC [14]

Answer:

vertical load = 10 kN

Modulus of elasticity = 200GPa

Yield stress on the cable = 400 MPa

Safety factor = 2.0

Explanation:

Data

let L = $\sqrt{(1.5)^{2} + (1.5)^{2} }$

= 3.35 m

substituting 1.5 m for h and 3 m for the tern (a + b)

$\theta$ = tan⁻¹( $\frac{1.5}{1.5}$ )

= 45⁰

substituting 1.5 for h and 3 m for (a+ b) yields:

$\theta$ ₂ = tan⁻¹ ( $\frac{1}{3}$ )

=25.56⁰

checking all the forces, they add up to zero. This means that the system is balanced and there is no resultant force.

6 0

3 years ago

Which of the following statements regarding piston rings is false? Select one: a.

sveta [45]

Compression ring prevents pressurized refrigerant from blowing past the piston into the crankcase is the false statement.

Answer: Option A

<u>Explanation:</u>

Compression rings seal the combustion chamber from crankcase and then transfer heat to the cylinder from the piston. The piston rings are present in an internal combustion engine or steam engine with multi functions. The functions of piston rings are,

Ensuring the combustion chamber is tightly sealed as to reduce the loss of gas to crankcase .
Promoting heat transfer from the piston to cylinder wall .
Controlling engine oil consumption .
Optimizing the proper quantity of oil between piston and cylinder wall.

3 0

4 years ago

A transmission line with an imperfect dielectric is connected to an ideal time-invariant voltage generator. The other end of the

kari74 [83]

Answer and Explanation:

O decreases linearly with the distance from the generator

4 0

3 years ago