An RC low-pass filter consists of an RF of 120 ? and a CF of 16 ?F. An RL of 1 k? is placed across the filter capacitor. The cutoff frequency for the circuit is
A) 1 kHz B) 124 Hz C) 142 Hz D) 93 Hz
D
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Identify what resources are available for off-site wetland identification
What will be an ideal response?
The spring-loaded tensioners used with ____________________ belts have a belt length variation gauge.
Fill in the blank(s) with the appropriate word(s).
Igneous rocks can best be characterized as:
A) rocks found primarily near volcanoes. B) rocks containing a mixture of primary and secondary minerals. C) rocks containing both feldspars and micas. D) rocks formed when molten magma solidifies. E) rocks formed from the recrystallization of sedimentary material.
The bestway to vary the speed of a shunt motor is by using a __________.
A. variable power supply B. variable rheostat in the field coil circuit C. variable armature rheostat