Technician A is incorrect so that means Technician B is correct.
Answer:
C
Explanation:Three methods of controlling the speed of a universal electric motor are: the resistance control method-which involved varying the voltage using semicoinductor devices,
the field tapping method, and the centrifugal switch method. In the resistance control method.
Whipping is done in a forward direction. You deposit a dab or puddle of metal down, and then whip the rod forward and up a little to let that dab cool a bit, then you move back and deposit another dab slightly ahead of the previous dab.
Cellulose rod like 6010 and 6011 are known as "fast freeze" electrodes, also known to be deep penetrating rods. The "whip and stitch" motion is used so that you get the full benefit of the cellulose characteristics. The forward motion basically gouges out the base metal, and it gets filled in with the back-step.
Hope this helped:)
Answer:
A moving car
Explanation:
It uses energy GAS to power it and it is energy
Answer:
a. Tm = 0.3192min.
b. MRR = 396.91mm^{3}/s.
Explanation:
<em>Given the following data</em>;
Drill diameter, D = 12.7mm
Depth, L = 60mm
Cutting speed, V = 25m/min = 25,000m
Feed, F = 0.30mm/rev
<u>To find the cutting time;</u>
Cutting time, Tm =?
.......eqn 1
<em>We would first solve for the feed rate (F);</em>
.......eqn 2
<em>But we need to find the rotational speed (N);</em>
N = 626.57rev/min.
Substiting N into eqn 2;
Fr = 626.57 * 0.30
Fr = 187.97mm/min.
Substiting F into eqn 1;
Tm = 0.3192min.
<em>Therefore, the cutting time is 0.3192 minutes.</em>
<u>For the material removal rate (MRR);</u>
<em>Time in seconds, we divide by 60;</em>
MRR = 23814.54/60 =396.91mm^{3}/s.
<em>Therefore, the material removal rate (MRR) is 396.91mm^{3}/s.</em>