What type of weld joins two surfaces at right angles to each other?
A. groove weld
B. plug weld
C. surfacing weld
D. fillet weld
Answer: D
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A frictionless piston maintains a co.1nstant pressure of 150 kPa on the steam in a vertical cylinder. The temperature is reduced from 200ºC until it reaches 60ºC. The work done by the piston on the steam is nearest:
A) 161 kJ/kg B) 188 kJ/kg C) 212 kJ/kg D) 244 kJ/kg
A BLDC motor is energized by a 100 V dc source. The armature resistance of the winding is 1.0 ?. The no-load speed of the motor is 1000 rpm at 100% modulation factor. Compute the motor speed when the load torque is 9 Nm. Also compute the drop in speed if the load torque increases to 15 Nm without any change in the voltage.
What will be an ideal response?
Hygroscopic water in the soil:
A) is tightly absorbed to the soil particle. B) is held in the soil's crystalline structure. C) is the first water the plant will take up. D) drains out of the soil from gravitational pull.
An NEC®-approved grounding electrode is a(n) _____
A) metallic cold water pipe that is run underground for a distance of at least 10 feet B) 3/4-inch aluminum rod that is 8 feet in length C) underground gas pipe D) 3/4-inch galvanized pipe that is 4 feet in length