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2 years ago

9. What power tool incorporates a set of dies and punches to cut new

Engineering

1 answer:

Slav-nsk [51]2 years ago

6 0

Answer:

The knockout tool, or punch, is used to make clean, round, conduit-sized holes in metal electrical boxes and panels, as well as punching through aluminum and fiberglass. The knockout tool has significantly changed the task of hole-making by creating clean holes faster than what is possible with other methods

Explanation:

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What are the 3 dimensions that used in isometric sketches?

noname [10]

Answer:

The three dimensions shown in an isometric drawing are the height, H, the length, L, and the depth, D

Explanation:

An isometric drawing of an object in presents a pictorial projection of the object in which the three dimension, views of the object's height, length, and depth, are combined in one view such that the dimensions of the isometric projection drawing are accurate and can be measured (by proportion of scale) to draw the different views of the object or by scaling, for actual construction of the object.

5 0

3 years ago

Suppose you wanted to convert an AC voltage to DC. Your AC voltage source has Vrms= 60V. If you use a full wave rectifier direct

vovangra [49]

Answer:

$V_{dc}=84.15\ V$

Explanation:

Given that

Vrms= 60 V

Vf= 0.7 V

We know that peak value of AC voltage given as

$V_{o}=\sqrt{2}\ V_{rms}$

Now by putting the values

$V_{o}=60\sqrt{2}\ V$

The output voltage of the DC current given as

$V_{dc}=V_{o}-V_f$

$V_{dc}=60\sqrt{2}-0.7\ V$

$V_{dc}=84.15\ V$

Therefore output voltage of the DC current is 84.15 V.

7 0

3 years ago

An engineers scale is generally used to _______.

Bumek [7]

Measure scale on technical drawings.

7 0

3 years ago

Determine the resistance of 3km of copper having a diameter of 0,65mm if the resistivity of copper is 1,7x10^8

LUCKY_DIMON [66]

Answer:

Resistance of copper = 1.54 * 10^18 Ohms

Explanation:

<u>Given the following data;</u>

Length of copper, L = 3 kilometers to meters = 3 * 1000 = 3000 m

Resistivity, P = 1.7 * 10^8 Ωm

Diameter = 0.65 millimeters to meters = 0.65/1000 = 0.00065 m

$Radius, r = \frac {diameter}{2}$

$Radius = \frac {0.00065}{2}$

Radius = 0.000325 m

To find the resistance;

Mathematically, resistance is given by the formula;

$Resistance = P \frac {L}{A}$

Where;

P is the resistivity of the material.
L is the length of the material.
A is the cross-sectional area of the material.

First of all, we would find the cross-sectional area of copper.

Area of circle = πr²

Substituting into the equation, we have;

Area = 3.142 * (0.000325)²

Area = 3.142 * 1.05625 × 10^-7

Area = 3.32 × 10^-7 m²

Now, to find the resistance of copper;

$Resistance = 1.7 * 10^{8} \frac {3000}{3.32 * 10^{-7}}$

$Resistance = 1.7 * 10^{8} * 903614.46$

<em>Resistance = 1.54 * 10^18 Ohms </em>

3 0

3 years ago

Based on bonding theory, explain why coefficient of expansion increases when you consider ceramics, metals and polymers

Mrrafil [7]

Answer:

The ratio that a material expands in accordance with changes in temperature is called the coefficient of thermal expansion. Because Fine Ceramics possess low coefficients of thermal expansion, their distortion values, with respect to changes in temperature, are low. The coefficients of thermal expansion depend on the bond strength between the atoms that make up the materials.

Explanation:

3 0

4 years ago