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3 years ago

Why is the reflection step in the engineering process the most important step?

1 answer:

6 0

Reflection helps designers to learn from their experiences, to integrate and co-ordinate different aspects of a design situation, to judge the progress of the design process, to evaluate interactions with the design context, and to plan suitable future design activities.

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A power cycle under development has two options for a condenser. One outputs saturated water and one outputs saturated vapor. Th

agasfer [191]

Answer:

408 J/kg

662696.7 J/kg

Explanation:

Workdone by compression process in a pump can be isothermally expressed as :

$W = P_1V_1 \ In \frac{P_2}{P_1}$

For water at inlet pressure 1. 0 bar;

the specific values for :

saturated vapor $v_g = 1.694 m^2 kg$

saturated liquid $v_f = 0.001043 \ m^2 kg$

∴ we have

$P_1$ = 1.0 bar = 1. 0 × 10⁵ N/m²

$P_2$ = 50 bar = 50 × 10⁵ N/m²

For saturated water output from condenser work; we have

W = $P_1V_f \ In (\frac{P_2}{P_1})$

W = $(1.0*10^{-5})(0.001043) In ( \frac{50}{10} ) J/kg$

W = 408 J/kg

For saturated vapor output from condenser

Work required :

$W = P_1V_g \ In ( \frac{P_2}{P_1} )$

W = $1.0*10^5*1.694 \ In ( \frac{50}{1.0}) J/kg$

W = 662696.7 J/kg

5 0

3 years ago

Read 2 more answers

explain how a roller coaster functions using gravity and momentum. Why does it not need an engine or a motor to speed it up and

vichka [17]

Answer:

A roller coaster does not have an engine to generate energy. This builds up a supply of potential energy that will be used to go down the hill as the train is pulled by gravity. Then all of that stored energy is released as kinetic energy which is what will get the train to go up the next hill.

Explanation:

5 0

3 years ago

Read 2 more answers

An AC circuit has a resistor, capacitor and inductor in series with a 120 V, 60 Hz voltage source. The resistance of the resisto

aliina [53]

Answer:

(i) 3.5385 ohm, 3.768 ohm (ii) 39.89 A (III) 4773.857 W (vi) 348 var (vii) 0.9973 (viii) 4.1796°

Explanation:

We have given voltage V =120 volt

Frequency f=60 Hz

Resistance R =3 ohm