Technician A says that most transfer pumps used on diesel CR systems are of the external gear type. Technician B says that most transfer pumps used on diesel CR systems use a non-positive pumping principle. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither nor B
Answer: A
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What is a machine that converts chemical (fuel) energy into mechanical force?
A. Motor B. Torque C. Engine D. Drivers
El sellado con masilla:
a. requiere protección contra derrames y salpicaduras. b. es prolijo y limpio. c. suele no ser necesario. d. exige muchas precauciones de seguridad.
Variables to be determined by the welder prior to welding include:
A) Spool tension B) Type of shielding gas C) Polarity D) All of the above
What happens to the refrigerant on the low-pressure side of a compression cycle refrigeration system?
A) The refrigerant evaporates at a low pressure and temperature. B) The refrigerant condenses at a low pressure and temperature. C) The refrigerant expels heat while evaporating. D) The refrigerant expels heat while condensing.