What are some of the pre-power checks one might have to perform with a welding robot?
What will be an ideal response?
One of the big ones is to make sure the ground between the welding power
supply and the fixturing is secure. If this becomes loose, the welds will not get
proper penetration and this will cause problems with part quality and can lead to
buildup of slag, which is molten metal splatter that has hardened in the welding
gun tip another pre-power check.
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Technician A says that advancing diesel fuel injection timing by one degree can cause greatly increased NOx in the end gas. Technician B says that retarding diesel fuel injection timing tends to increase the output of HC in the exhaust gas. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
What are the steps involved in performing a double flare procedure?
What will be an ideal response?
The temperature of the ground stays nearly constant
A) at any depth below the frost line B) at any depth below 6 feet C) at any depth below 28 feet D) at any depth below 4 feet
In the simple voltage regulator shown in Figure P9.53, R must maintain the Zener diode current within its specified limits for all values of the source voltage, load current, and Zener diode voltage. Determine the minimum and maximum values of R that can be used.
Vz = 5 V ± 10% rz = 15 ?
|iz |min = 3.5 mA |iz |max = 65 mA
|vS| = 12 ± 3 V |io| = 70 ± 20 mA