Answer 1:
Like most electrical mechanical devices, electric motors have mechanical bearings that eventually wear out.
The graphite brushes and commutator of older DC motors can also wear out over time
Answer2:
Question two is not specific enough!!
Are we talking DC?? Because if so, then yes, nothing will happen. Assuming you are insulted by ground.
Ac is a different story, as the two would light up dangerously and etc.
-your welcome!!
Answer and Explanation:
Some of the advantages of direct water supply system are:
- Smaller size of the cistern
- No risk of polluted water
- Ease of installation
- Lower pipe work
Some of the advantages of indirect water supply system are:
- It can be pumped completely
- Lower demand on the main source
- Minimization of wear and tear on taps
- Larger size of the cistern.
Answer:
In the result of a earthquake, you should direct people into areas that are safe, such as places where the ground has not been broken up, and then tell people to get out of their cars and be careful. You should also have them carry any valuable items out of the car(if they have time), and then wait until the initial shocks and aftershocks are over, and then tell them to get back into their cars and then drive carefully and safely.
Answer:
C.) determine the heat of a fire.
Explanation:
NIMS certifies individual skills against the national standards. The NIMS credentialing program requires that the candidate meet both performance and theory requirements. Both the performance and knowledge examinations are industry-designed and industry-piloted. There are 52 distinct NIMS skill certifications.
