A Colpitts oscillator with an added capacitor in its feedback network is known as a
A) Armstrong oscillator B) Wien-bridge oscillator
C) Clapp oscillator D) Hartley oscillator
C
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The difference between softwoods and hardwoods is based on the
A) strength of wood. B) botanical characteristics. C) abrasion resistance of wood. D) decay resistance of wood. E) density of wood.
___________ backflow is a reversal of normal flow in a system caused by a negative pressure (vacuum) in the potable water supply.
a. Gravity b. Back-siphonage c. Back-pressure d. none of the above
Si el diámetro de un tanque es de 8 pies (2,43 m), el radio sería _____.
a. 8 pies (2,44 m) b. 4 pies (1,21 m) c. 24 pies (7,31 m) d. 24 pies cuadrados (7,31 m2)
A low pitch rumble over 20 MPH (32 km/h) is likely caused by a worn or defective ________.
a. Incorrect backlash or pinion depth b. Worn carrier bearings c. Incorrect gear oil or worn limited slip clutches d. Worn u-joints