¿Qué tipo de frenado de motor se usa a menudo con motores de CA que se controlan con un impulsor de frecuencia ajustable?
a. Eléctrico de CD
b. Por fricción
c. Dinámico
d. Electromecánico
c. Dinámico
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Los sistemas de recuperación de energía pueden transferir calor con _____.
a. una rueda de calor b. un cortafuegos c. un revestimiento acústico d. un filtro
Which aspects of contractual arrangements are covered in the Special and General Conditions portions of a specification?
a. Non-technical b. Technical c. Equipment and materials d. Regulatory compliance
Match the following
a. lack of this can stop bud growth and result in death of root tips b. responsible for vegetative growth of plant and dark green color c. entire plant may be yellow if deficient d. cupped leaves and reduced seed production if deficient e. important in seedling and young plant growth f. plant lacks if it wilts easily and has dead spots on leaves 1. nitrogen 2. phosphorus 3. potassium 4. calcium 5. magnesium 6. sulfur
Technician A says that vehicle warranties are limited by mileage. Technician B says that vehicle warranties are limited by vehicle age. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician