Phrases that identify mandatory rules include__________ and __________. Phrases that identify permissive rules include __________ and __________.
What will be an ideal response?
shall, shall not, shall be permitted,shall not be required
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?What is the minimum tensile strength of a class RG65 welding rod?
A. ?35,000 to 45,000 psi B. ?45,000 to 55,000 psi C. ?55,000 to 65,000 psi D. ?65,000 to 75,000 psi
Answer the following statement(s) true (T) or false (F)
1. Condition monitoring means monitoring the condition of a machine when it is not running
2. Eddy-current type of transducer produces an output proportional to velocity
3. A capacitance transducer has two plates of area 5 
each, separated by an air gap of 1mm thickness. Value of capacitance is 442pF.
Answer the following statement(s) true (T) or false (F)
1. One of the main considerations when installing a machine is the power source. 2. Manual control may be accomplished by simply connecting a switch in series with the motor. 3. With automatic control, an operator has to initiate certain actions. 4. High voltage surges are harmless and cannot damage electronic components connected to the power line. 5. Diodes are used to suppress the voltage spikes produced by coils that operate on direct current.
Residential piping is called plumbing, and carries fresh water, gas, or liquid and solid waste.
Answer the following statement true (T) or false (F)