Las losas de placas planas pueden volarse en una distan- cia del _____ por ciento del tramo interior.
a. 5
b. 15
c. 25
d. 30
Answer: D
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For a tank circuit to maintain oscillation, ____ feedback is required.
A. degenerative B. regenerative C. positive D. negative
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Which component on the low-voltage circuit of a residential HVAC system is NOT a load?
A. heat anticipator B. thermostat contacts C. fan relay coil D. low-pressure control
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The pencil you use for sketching should have a hard lead that is sharp.
Answer the following statement true (T) or false (F)
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Which of the following circuits are in the demodulator section of a proximity switch?
A. tank circuit B. rectifier C. filter D. amplifier E. both b and c
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