Options: Data in which changes to existing records cause the previous version of the records to be eliminated, Data in which changes to existing records do not cause the previous version of the records to be eliminated, Data that are never altered or deleted once they have been added, Data that are never deleted once they have been added
Options: a . a 16-bit register in the microprocessor that indicate the beginning of the stack memory. b . a register that decodes and executes 16-bit arithmetic expression. c. The first memory location where a subroutine address is stored. d . a register in which flag bits are stored
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?
Options: The voltage remains at one polarity and at a steady level, The voltage remains at one polarity but changes value periodically, The voltage causes current to flow in two directions at the same time, The voltage reverses polarity periodically
Which one of the following statements is true for the voltage in a parallel RL circuit?
Options: The voltage always has the same amplitude and phase for every part of the circuit, The total voltage is equal to the sum of the voltages across the resistance and inductance, The total voltage lags the total current by less than 90, The total voltages is less than the sum of the voltages across the resistance and inductance