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4 years ago

The load is the pivot point of a lever.

Engineering

2 answers:

iren2701 [21]4 years ago

7 0

Answer:

False

Explanation :

lever is a rigid bar which turn around a pivot point, called a fulcrum. It is a simple machine and can be use to move a load (or do work). Effort is applied to one part of the lever and it pushes the load at another end. Therefore, the load is not the lever part of the fulcrum or pivot.

olganol [36]4 years ago

6 0

Answer:Its False!

Explanation:

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A hollow steel shaft with and outside diameter of (do)-420 mm and an inside diameter of (di) 350 mm is subjected to a torque of

-Dominant- [34]

Answer:

a. $\tau=51.55 MPa$

b. $\tau=42.95MPa$

c. $\theta=7.67\times 10^{-3}$ rad.

Explanation:

Given: $D_i=350 mm,D_o=420 mm,T=300 KN-m ,G=80 G Pa$

We know that

$\dfrac{\tau}{J}=\dfrac{T}{r}=\dfrac{G\theta}{L}$

J for hollow shaft $J=\dfrac{\pi (D_o^4-D_i^4)}{64}$

(a)

Maximum shear stress $\tau =\dfrac{16T}{\pi Do^3(1-K^4)}$

$K=\dfrac{D_i}{D_o}$ ⇒K=0.83

$\tau =\dfrac{16\times 300\times 1000}{\pi\times 0.42^3(1-.88^4)}$

$\tau=51.55 MPa$

(b)

We know that $\tau \alpha r$

So $\dfrac{\tau_{max}}{\tau}=\dfrac{R_o}{r}$

$\dfrac{51.55}{\tau}=\dfrac{210}{175}$

$\tau=42.95MPa$

(c)

$\dfrac{\tau_{max}}{R_{max}}=\dfrac{G\theta }{L}$

$\dfrac{51.55}{210}=\dfrac{80\times 10^3\theta }{2500}$

$\theta=7.67\times 10^{-3}$ rad.

8 0

4 years ago

A 100 MHz generator with Vg= 10/00 v and internal resistance 50 ohms air line that is 3.6m and terminated in a 25+j25 ohm load

Lilit [14]

The value of Vz at point z from the generator = 17.748 ∠ -107.62° V

Given data :

Internal resistance = 50 ohms

Vg = 10 ∠ 0° v

length of air line = 3.6 m

Terminating resistance = 25 + j25 Ω

First step : Determine the Total impedance 

Total Impedance ( z ) = Rin + Rline + Rl + jXl

= 50 + 50 + 25 + j25

= 125 + j25 ≈ 127.47 ∠ 11.3°

Next step : Determine the current in the circuit

current ( I ) = Vg / z

= ( 10∠0° v ) / ( 127.47 ∠ 11.3° )

= 0.0784 ∠ -11.3 amp

Final step : Determine the value of Vz at point z from the generator

Vz = ( Vg + I * Ri ) - ( RI * I + Rline * I )

= ( 10∠0° + 0.0784 ∠ -11.3 * 50 ) - ( 25 + j25 + 50 * 0.0784 ∠ -11.3 )

= -5.37 - j16.91 ≈ 17.748 ∠ -107.62° V

Hence we can conclude that the value of Vz at point z form the generator 17.748 ∠ -107.62° V

Learn more about voltage : brainly.com/question/11288970

Hello your question is incomplete below is the complete question

A 100 MHz generator with Vg =10< 0 degree (v) and internal resistance 50-ohm is connected to a lossless 50-ohm air line that is 3.6m long and terminated in a 25+j25 (ohm) load.

Find (a) V(z) at a location z from the generate.

4 0

3 years ago

What is programming and sensory?

NNADVOKAT [17]

Answer:

Programing is using data or codes to make something happen A sensory is like when you move your arm in front of a device and like it has a light that turns on then that is sensory it like can tell your moving

7 0

3 years ago

Elena, the marketing manager at a consumer goods company, plans to send out questionnaires to random individuals (consumers) in

motikmotik

Answer:

A. Qualitative

Explanation:

Because they're looking for qualities to change in future products

7 0

3 years ago

A 1m3 tank containing air at 25℃ and 500kPa is connected through a valve to

Aliun [14]

Answer:

The right answer is "2.2099 m³".

Explanation:

Given:

Mass,

m = 5 kg

Temperature,

T = 35℃

or,

= 35 + 273

Pressure,

P = 200 kPa

Gas constant,

R = 0.2870 kj/kgK

By using the ideal gas equation,

The volume will be:

⇒ $PV=mRT$

or,

⇒ $V=\frac{mRT}{P}$

By substituting the values, we get

$=\frac{5(0.2870)(35+273)}{200}$

$=\frac{441.98}{200}$

$=2.2099 \ m^3$

8 0

3 years ago