The capacitors in a the feedback network of a Colpitts oscillator are C1 = 0.22 ?F and C2 = 0.022 ?F. If the inductor is equal to 1.1 mH the output frequency of the oscillator is
A) 9.75 kHz B) 33.9 kHz C) 7.45 kHz D) 3.41 kHz
B
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A. ?nickel B. ?aluminum C. ?chromium D. ?copper alloy
?Which of the following is true of electroslag welding?
A. ?The arc is produced below the molten flux surface. B. ?The heat for welding is produced by current transferred from the electrode to the work. C. ?The slags produced are highly conductive in a molten state. D. ?The slags must be relatively shallow to maintain the circuit.
The ____________ material condition for a part exists when a hole is at its lowest limit of size, or when a shaft is at its highest limit of size.
A. LMC B. MMC C. RFS
Undersized steam piping results in _____
a. less noise b. reduced pressure drop c. greater pressure drop d. increased heat loss from piping surfaces