Answer:
The answer is A.
Explanation:
Two main types of network switches, modular and fixed configuration switches, are used for connecting the devices with one another provided they are on the same network.
As the name suggests, modular switches can be configured according to your needs and specific situations where you need a different setup.
The one advantage fixed-configuration switches have over the modular switches is that they are easier to operate. You can't change anything for a different application but they are simpler to setup and use, you can just plug them in and start using. They are usually for the more casual end-user and home networks etc.
I hope this answer helps.
Answer:
The correct option is;
D. The vessel has closed living spaces onboard
Explanation:
Type B-1 Fire extinguishers
A fire extinguisher is required by the law to be installed in a boat that hs the following specifications
1) There are closed compartment in the boat that can be used for fuel storage
2) There exist double double bottom that is only partially filled with flotation materials
3) There are closed living spaces in the boat
4) The fuel tank is permanently installed in the boat
5) The engine is inboard.
Answer:
1. The magnetic flux line form a closed loop.
2. The magnetic flux line repel each other.
3. The magnetic flux line never intersect.
Answer:
The tube surface temperature immediately after installation is 120.4°C and after prolonged service is 110.8°C
Explanation:
The properties of water at 100°C and 1 atm are:
pL = 957.9 kg/m³
pV = 0.596 kg/m³
ΔHL = 2257 kJ/kg
CpL = 4.217 kJ/kg K
uL = 279x10⁻⁶Ns/m²
KL = 0.68 W/m K
σ = 58.9x10³N/m
When the water boils on the surface its heat flux is:
For copper-water, the properties are:
Cfg = 0.0128
The heat flux is:
qn = 0.9 * 18703.42 = 16833.078 W/m²
The tube surface temperature immediately after installation is:
Tinst = 100 + 20.4 = 120.4°C
For rough surfaces, Cfg = 0.0068. Using the same equation:
ΔT = 10.8°C
The tube surface temperature after prolonged service is:
Tprolo = 100 + 10.8 = 110.8°C
Answer:
2.8
Explanation:
The ideal mechanical advantage of the pulley IMA = D'/D where D' = diameter of output pulley = 7 inches and D = diameter of input pulley = 2.5 inches
So, IMA = D'/D
= 7/2.5
= 2.8
So, the ideal mechanical advantage of the pulley IMA = 2.8
