Maintenance Tech I-II Conventional questions with correct answers

What advantage is realized by increasing the voltage in a broadband cable network from 60 volts alternating current (VAC) to 90 volts? CORRECT ANSWER Operating with 50% more voltage reduces the voltage drop and current drawn in the network for more efficient power utilization. How does surge protection at the input and output of a Ferro resonant power supply defend against voltage surges? CORRECT ANSWER By passing voltage surges (within the surge device rating) to ground without damage. Which part of a Ferro resonant transformer regulates the load on the secondary winding? CORRECT ANSWER The magnetic shunt. In a standby network power supply, what comes online to convert the battery voltage to alternating current (AC), which then goes to the Ferro resonant transformer? CORRECT ANSWER The battery-powered inverter. In a power inserter with three filtering networks, what is the purpose of the high-pass filter? CORRECT ANSWER To prevent the 60 hertz (Hz) alternating current (AC) from passing between the two radio frequency (RF)/AC ports. What inserts alternating current (AC) into the network with a direct connection to an amplifier rather than using a power inserter? CORRECT ANSWER The amplifier AC circuitry. What is the advantage for supplying alternating current (AC) to multiple amplifiers from one network power supply? CORRECT ANSWER Allows the designer to place amplifiers without concern about access to electrical utility power.