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3 years ago

What test should be performed on abrasive wheels

Engineering

2 answers:

soldier1979 [14.2K]3 years ago

8 0

Ring test I think maybe I’m not 100%

Svet_ta [14]3 years ago

3 0

Answer:

before wheel is put on it should be looked at for damage and a sound or ring test should be done to check for cracks, to test the wheel it should be tapped with a non metallic instrument (I looked it up)

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A tiny, glass sphere has a charge of +10.9 nC. A metal ball bearing, which is 4.00 cm above the glass sphere, experiences an ele

andrew11 [14]

Answer:

2.12 × 10⁻⁷ C

Explanation:

Given:

Charge on the glass sphere, Q = 10.9 nC = 10.9 × 10⁻⁹ C

Distance between the glass and the metal sphere, r = 4.0 cm = 0.04 m

Force experienced by the metal sphere, F = 0.0130 N

let the charge on the metal sphere be 'q'

Now,

the force due to a charge on the other charge is given as:

$F=\frac{kQq}{r^2}$

where,

k is the coulomb's constant = 9 × 10⁹ N.m²/C²

on substituting the values in the formula, we get

$0.0130=\frac{9\times10^9\times10.9\times10^{-9}\times\q}{0.04^2}$

q = 2.12 × 10⁻⁷ C

8 0

3 years ago

A rope having a weight per unit length of 0.4 lb/ft is wound 2 1/2 times around a horizontal rod. Knowing that the coefficient o

Mademuasel [1]

Explanation:

Tension in the rope

$\begin{aligned}T_{1} &=0.4 \times x \\T_{2} &=100+0.4 \times 10 \\&=104\end{aligned}$

$M s=0.3$ ∅ $=2 \cdot 5(2 \pi)=5 \pi$

$\begin{aligned}\frac{T_{1}}{T_{2}}=e^{\mu \theta} & \Rightarrow \frac{104}{0.4 x}=e^{0.3(5 \pi)} \\& \Rightarrow x=2.34 \mathrm{H}\end{aligned}$

NOTE : Refer the image

3 0

3 years ago

1. A car engine transfers 3000J in 20 seconds. What is the power generated by the engine?

Scorpion4ik [409]

Answer:

150 W

Explanation:

Power is energy per unit time. The power generated by the engine is ...

(3000 J)/(20 s) = 150 J/s = 150 W

The engine generated 150 watts.

3 0

3 years ago

When preparing a foundation for a heavy duty machine tool, discuss any four (4) statics machine characteristics to be considered

kozerog [31]

Answer:

1 ) Accuracy of the Machine Tool

2) Load bearing capacity

3) Linearity in the product line

4) Torque of the machine

Explanation:

we know that machine tool is the permanent essential in manufacturing industries

it is a machine use for different form like cutting , grinding and boring etc

so 1st is

1 ) Accuracy of the Machine Tool

we know it is very important Characteristic of the machine tool because when we use it in manufacturing unit Accuracy of the Machine Tool should be higher concern

2) Load bearing capacity

we should very careful about Load bearing capacity because how much amount of load tool will bear check by some parameter like creep , shear stress and strength etc

3) Linearity in the product line

Linearity in the product line mean that it should be group of related product produced by the any one of the manufacturer otherwise it will take time or it may be intermixing

4) Torque of the machine

we know that Torque is a rotational force or a turning force so amount of force multiplied by the distance of the operation

and we know torque per second give the power rating of machine tool

5 0

4 years ago

A sinusoidal voltage source produces the waveform, v t = 1 + cos 2πft. Design a system with v t as its input such that an LED wi

DerKrebs [107]

Answer:

See explaination

Explanation:

LM358 is the useful IC which works as buffer. It enables circuit to remove overloading effect on each other. Image is in attachment.

We can define a light-emitting diode (LED) as a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons

See attached file for detailed solution of the given problem.

3 0

3 years ago