If a waveform repeats every 1ms, what is the frequency?
A) 100 Hz B) 100KHz C) 1KHz D) 10KHz
C
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Spur gears and helical gears are designed with parallel shafts.
Answer the following statement true (T) or false (F)
Technician A says that as much as 50% of the air needed by the engine at idle speed flows through the PCV (positive crankcase ventilation) system. Technician B says that PCV tests include the rattle test, card test, snap-back test, and crankcase vacuum test. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
The way a large commercial customer uses power and the resulting system electrical efficiency is known a facility's __________________
A. real power B. apparent power C. volt-amps reactive power (VARS) D. power factor
When you are asked to repair weld an aluminum diesel fuel tank, which of the following is recommended?
A. fill with fuel before welding B. fill with water before welding C. steam and fill with nitrogen D. steam and fill with oxygen