Engineering, 28.01.2022 05:20 rfdgd
Working surfaces are classified as Very Light Duty, Light Duty, Medium Duty and Heavy Duty. Classify the following:
a. Roofing
b. Light Frame Construction
c. Concrete finishing using hand tools
d. Concrete finishing using motorized screeds
e. Structural Steel Erection
1. Very Light Duty
2. Light Duty
3. medium duty
4. Heavy Duty
Answers: 1
Engineering, 04.07.2019 18:10
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
Engineering, 04.07.2019 19:10
Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?
Answers: 3
Engineering, 06.07.2019 02:30
Precipitation hardening can be achieved in many light alloys by a three-step heat treatment. what is carried out and what is the purpose at each step? why is such a treatment necessary based on the nucleation and growth theory of phase transformation. compare this treatment with tempering martensite for carbon steels (similarities and differences).
Answers: 1
Engineering, 06.07.2019 03:10
Asolid steel sphere (k=63.9 w m-1 k-1 , ? =7832 kg m-3 , c=0.523 kj kg-1 k-1 ), 100 mm in diameter is initially at a uniform temperature of 500o c and is suddenly quenched in a large oil bath for which t? = 100o c and h = 3200 w m-2 k-1. estimate the time required for the sphere to cool to 200o c and to 110o c
Answers: 1
Working surfaces are classified as Very Light Duty, Light Duty, Medium Duty and Heavy Duty. Classify...
History, 24.07.2019 02:00
Biology, 24.07.2019 02:00
Biology, 24.07.2019 02:00
History, 24.07.2019 02:00
English, 24.07.2019 02:00
History, 24.07.2019 02:00
English, 24.07.2019 02:00
History, 24.07.2019 02:00
Biology, 24.07.2019 02:00
Geography, 24.07.2019 02:00
Mathematics, 24.07.2019 02:00