Answer:

Explanation:
Given that
Calorific value (CV) = 44 MJ/Kg
CV= 44,000 KJ/kg
Brake thermal efficiency(η) = 37.9 %
We know that

Where BP is the brake power



Brake specific fuel consumption (s)




Answer:
2.83 kg
Explanation:
Given:
Volume, V = 0.8 m³
gage pressure, P = 200 kPa
Absolute pressure = gage pressure + Atmospheric pressure
= 200 + 101 = 301 kPa = 301 × 10³ N/m²
Temperature, T = 23° C = 23 + 273 = 296 K
Now,
From the ideal gas equation
PV = mRT
Where,
m is the mass
R is the ideal gas constant = 287 J/Kg K. (for air)
thus,
301 × 10³ × 0.8 = m × 287 × 296
or
m = 2.83 kg
Answer:112.376 s
Explanation:
Given






Using Newton's law of cooling
=
=
7=
Taking log both side
t=112.376sec
Answer:
Explanation:
Floor Load:
Lo= 50psf
At= 25x25 = 625 square feet

= 13.1psf
%reduction= 13.1/50 = 26%
Fr= 3[(13.1psf)(25ft)(25ft)+(20psf)(25ft)(25ft)]= 62k
Answer:
Fire/Flame resistant clothing and aprons
Explanation:
Individuals working with or around welding equipment are usually required to wear Fire/Flame resistant clothing and aprons which are designed to protect the user from various types of hazards including heat, fires
, burns
, and sometimes radiation. In this scenario, it would protect the individual from the welding sparks that are produced when welding, which tends to fly all over the place and can catch fire in some cases. These clothes will prevent that from happening.