The resistance reading of an open heating element is:
A) Infinite ohms, which would show OL on most digital meters.
B) It is not possible to check the resistance of an open heating element.
C) 0, which would show as 0.0 to 0.1 on most digital meters.
D) A measurable resistance of approximately 12.
A
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A) That separate when changing state. B) That are electromagnetically bonded to form a new refrigerant. C) That do not separate when changing state. D) That are chemically bonded to form a new refrigerant.
Two 7490 decade counters, configured to count 0 to 9, are connected so that the Q3 output of one IC is wired to the clock input of the other IC. What is the modulus of the total circuit?
A) MOD-20 B) MOD-100 C) MOD-99 D) MOD-80
As a rule of thumb, _____ screws are required per 1,000 square feet of wallboard to install single-layer drywall on 16" OC studs.
a. 800 b. 1,000 c. 1,200 d. 1,500
Most pneumatic grease guns operate with how much air pressure?
A) 30 psi B) 120 psi C) 90 psi D) None of these