What is the recommended water to coolant mixing ratio for ethylene glycol based coolants?
A. 20:1
B. 50:1
C. 10:1
D. 1:1
Answer: D
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Describe the difference between quicklime and slaked lime.
What will be an ideal response?
La placa de datos del motor indica que el motor tiene un FLC de 13A y un factor de servicio (SF) de 1,15. La corriente adicional que este motor puede manejar de manera segura para demandas intermitentes de potencia es:
a. 0A. b. 1,3A. c. 1,95A. d. 3,25A.
Many things can go wrong with an air compressor, one of which is the same problem that may be encountered with hydraulic pumps. This is ____.
A. entrained air B. bearing failure C. worn cylinder walls D. vane wear
Why is minimizing duct restriction so important?
A) The system cannot operate properly against excessive air restriction. B) Incorrect terminal velocities can cause discomfort. C) Excessive restriction can increase operating cost. D) Excessive restriction causes excessive noise.