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3 years ago

The welding method that requires the operator to observe and only make corrections is

Engineering

2 answers:

AVprozaik [17]3 years ago

8 0

The welding method that requires the operator to observe and only make corrections is automated.

Answer: E

Explanation

The process of welding is used to merge different metals with the help of heating them to welding temperature.

The metals coagulate at their end point and then coagulate with other metals to join together.

The welding can be done completely manually termed as manual welding.

It can be done with the help of machine where the maximum work will be done by the machine only termed as semiautomatic welding.

The machine and automatic welding is the one where the whole process of welding will be governed completely by the machine only.

The automated welding is the one where the operator has the job to start the welding machine and then to observe the occurrence of defects after welding.

SVEN [57.7K]3 years ago

3 0

Automatic manual semiautomatic

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Answer:

a) $m=0.17kg/s$

b) $Ma=0.89$

Explanation:

From the question we are told that:

Pressure $P=60kPa$

Diameter $d=3cm$

Generally at sea level

$T_0=288k\\\\\rho_0=1.225kg/m^3\\\\P_0=101350Pa\\\\r=1.4$

Generally the Power series equation for Mach number is mathematically given by

$\frac{p_0}{p}=(1+\frac{r-1}{2}Ma^2)^{\frac{r}{r-1}}$

$\frac{101350}{60*10^3}=(1+\frac{1.4-1}{2}Ma^2)^{\frac{1.4}{1.4-1}}$

$Ma=0.89$

Therefore

Mass flow rate

$\frac{\rho_0}{\rho}=(1+\frac{1.4-1}{2}(0.89)^2)^{\frac{1.4}{1.4-1}}$

$\frac{1.225}{\rho}=(1+\frac{1.4-1}{2}(0.89)^2)^{\frac{1.4}{1.4-1}}$

$\rho=0.848kg/m^3$

Generally the equation for Velocity at throat is mathematically given by

$V=Ma(r*T_0\sqrt{T_e}$ )

Where

$T_e=\frac{P_e}{R\rho}\\\\T_e=\frac{60*10^6}{288*0.842\rho}$

$T_e=248$

Therefore

$V=0.89(1.4*288\sqrt{248})\\\\V=284$

Generally the equation for Mass flow rate is mathematically given by

$m=\rho*A*V$

$m=0.84*\frac{\pi}{4}*3*10^{-2}*284$

$m=0.17kg/s$

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3 years ago

How would you expect an increase in the austenite grain size to affect the hardenability of a steel alloy? Why?

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Answer:

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3 years ago

Assuming the point estimate in Problem 6.36 is the true population parameter, what is the probability that a particular assay, w

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Complete Question

The complete question is shown on the first uploaded image

Answer:

The probability is $0.958$

Explanation:

The explanation is shown on the second and third uploaded image

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3 years ago

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jasenka [17]

In poor weather, you should <u>double</u> your following distance.

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3 years ago

A 1000-turn coil of wire 1.0 cm in diameter is in a magnetic field that increases from 0.10 T to 0.30 T in 10 ms. The axis of th

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Explanation:

Given details-

Number of turns of wire- 1000 turns

The diameter of the wire coil- 1 cm

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Magnetic Field (Final)=0.30 T

Time=10 ms

The orientation of the axis of the coil= parallel to the field.

We know that EMF of the coil is mathematically represented as –

E=N(ΔФ/Δt)

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N= no of turns*area of the coil

Substituting the values of the above variables

=1000*3.14*0.5*10-4

=.0785

E=0.0785(.2/10*10-3)

=1.57 V

Thus, the emf generated is 1.57 V

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3 years ago