For the CMOS NOR gate of Figure 11.23 identify the state of each transistor for v1 = v2 = 5 V. Assume VDD = 5V.
Analysis:
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All electrical systems and cables need to maintain at least _________ of separation from the lightning protection system.
A. 2 ft B. 6 ft C. 20 ft D. 50 ft
Subsoil contains the most organic matter
Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. In some generator systems, a large diode system is installed to prevent field charge damage. 2. If there is a complete failure of the AC power, the oil switch cannot be operated from the DC source. 3. The electrical current flowing in the alternators through conductors produces heat in the coils because of I2 R losses. 4. The voltage to the potential coils of instruments mounted on the switchboard should not exceed 120 to 125 volts. 5. It is safe to open the secondary circuit of a current transformer when there is a current flow in the primary circuit.
A motor starter ________
A) is just a larger version of a relay, since it has only a coil and contacts B) is more like a circuit breaker than a relay in that it can detect excessive heat buildup on the outside of the compressor motor through its heaters C) has a coil and contacts like a relay or contactor, and it also has overloads to provide overcurrent protection