The 555 timer is a(n) ____-pin integrated circuit that has become one of the most popular electronic devices used in industrial electronic circuits.
A. Six
B. seven
C. Eight
D. Nine
Answer: C
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In warm weather, concrete block should not be laid on the footing until _____ have/has passed.
A. two weeks B. one week C. 3 days D. 48 hours
In the following equation of state, a is constant.
P= RT/?V+ (aT^1.5)/?V^2 Which of the following is a correct expression for the molar entropy residual property for this equation of state? A.R ln?(Z)+(1.5a?T)/?V^2 B.R ln?(Z)-(1.5a?T)/?V^2 C.R ln?(Z)+(1.5a?T)/?V D.R ln?(Z)-(1.5a?T)/?V E.None of these are the correct expression.
Technician Asays crimping solderless connections is the best method of splicing wires. Technician B says crimping should not be used if connection is subjected to excessive movement. Who is correct?
A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B
Cooling systems utilized with power electronics may be classified as two types: liquid and forced air.
Answer the following statement true (T) or false (F)