The volume of a cone is given by 
, where r is the radius of the base and h is the height. Assume the height is measured to be h = 6.00 ± 0.01 cm and the radius is r = 5.00 ± 0.02 cm.
a. Estimate the volume of the cone, and find the uncertainty in the estimate.
b. Which would provide a greater reduction in the uncertainty in V: reducing the uncertainty in h to 0.005 cm or reducing the uncertainty in r to 0.01 cm?
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Why are capacitors rated at higher voltages than the unit line voltage?
A) They are overrated as a safety measure. B) Charging and discharging in series with an inductive load subjects them to high voltage. C) They are charged with a high voltage at the factory. D) Capacitors increase the voltage to the motor.
Answer the following statement(s) true (T) or false (F)
1. Copper, aluminum, and copper-clad aluminum grounding electrode conductors are permitted to be connected to an 8 ft ground rod. 2. Metal raceways, cable trays, cable armor, cable sheath, enclosures, frames, fittings, and other metal non-current-carrying parts that are to serve as grounding conductors are not required to be bonded if a supplemental equipment grounding conductor is installed inside for grounding equipment. 3. Structural metal in the area served by a separately derived system, but is not used as a grounding electrode for the separately derived system, is required to be bonded with a conductor sized in accordance with Table 250.102(C)(1). 4. The grounding electrode (earth terminal) for a lightning protection system is required to be completely separate from the grounding electrode system for the electrical service and the electrodes are not permitted to be bonded together.
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
Define voltage rise and voltage drop.
What will be an ideal response?