¿Cuál de los siguientes elementos no describe una ubicación de tubería de vapor elevada?
a. Tubo elevado
b. Tubo de subida
c. PRV
d. Bastidor para tuberías
c. PRV
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List and explain three systems used to determine the nutritional status of the plant
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. The brush polarity in a separately excited generator cannot be changed by reversing the rotation of the armature or the direction of the field current. 2. If both the armature direction and the direction of the field current change, the brush polarity remains the same. 3. The magnitude of the voltage depends on the rate at which the flux is cut. 4. Field control of the output voltage is accomplished by varying the total resistance of the field circuit with a field rheostat. 5. Brush polarity changes when the field current is zero.
Conservation tillage systems are said to have all but one of the following advantages over conventional tillage systems
A) It involves the use of less toxic weed control practices. B) It reduces soil erosion. C) Its labor and energy requirements are lower. D) It encourages higher microbial population numbers in the soil. E) It increases the hydraulic conductivity of the soil.
What is meant by drift?
What will be an ideal response?