The oil safety valve will not open until
A) The draft switch closes
B) The oil pump produces a pressure in the supply line
C) The oil pump produces a vacuum in the supply line
D) It is energized by the primary burner control
C
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What technique do Reed–Solomon (RS) codes employ to enable the system to correct multiple data-bit errors?
A. Aliasing B. Amplitude companding C. Natural sampling D. Interleaving
Which of the following is a key characteristic of orthogonal frequency-division multiplexing?
A. Amplitude modulation B. Noise performance C. Digital modulation D. Spectral efficiency
If the bandwidth of a low-pass filter is 0 to 1 kHz, the cutoff frequency is ________
A) 2 kHz B) 500 Hz C) 1 kHz D) 0 Hz
What is the most common deep vacuum level required by manufacturers?
A) 500 microns B) 1,000 microns C) 100 microns D) 5,000 microns