Answer:
True
Explanation:
The fundamental steps involved in the operation of a solar cell are as follows:
- Light is incident on the solar cell and this light energy is absorbed by the solar cell.
- The absorbed energy results in the movement of the electron inside the cell which constitutes the electric current in the cell.
- Electric current flows and electricity is produced.
- Hence,in solar cell the light energy is responsible for the only voltage in the cell.
Tie Line A circuit connecting two Balancing Authority Areas. Tie Line Bias A mode of Automatic Generation Control that allows the Balancing Authority to 1.)
Answer:
2.93 mm
Explanation:
Plane strain fracture toughness
Yield strength,
Design stress=0.5*535=267.5 Mpa
Dimensionless parameter Y=1.5
Critical length of surface flaw is given by
Answer:
(a) 151.84 kJ
(b) 2.922 kJ/K
Explanation:
(a) The parameters given are;
Mass of hydrogen gas, H₂ = 0.1 kg = 100 g
Molar mass of H₂ = 2.016 g/mol
Number of moles of H₂ = 100/2.016 = 49.6 moles
V₁ = mRT/P = 0.1×4.12×300/1000 = 0.1236 m³
P₁/P₂ = (V₂/V₁)^k
V₂ = (P₁/P₂)^(1/k)×V₁ =0.1236 × (1000/500)^(1/1.4) = 0.3262 m³
Boundary work done = (V₂ - V₁)(P₂ + P₁)/2 = (0.3262 - 0.1236)*(500 + 1000)/2 = 151.84 kJ
(b) Entropy generated ΔS = Cv · ㏑(T₂/T₁) + R ·㏑(v₂/v₁)
=10.18 × ㏑(270/300) + 4.12 ·㏑(0.3262/0.1236) = 2.922 kJ/K.
Answer: The engineering design process emphasizes open-ended problem solving and encourages students to learn from failure. This process nurtures students abilities to create innovative solutions to challenges in any subject! In addition to their involvement in design and development, many engineers work in testing, production, or maintenance. These engineers supervise production in factories, determine the causes of a component's failure, and test manufactured products to maintain quality.
Explanation: