What types of circuits are used when wiring houses?
A) Series
B) Conducting
C) Parallel
D) Grounding
Answer: C
Explanation: A) Incorrect. In a series circuit, electrons have only one path to follow along.
B) Incorrect. Circuits fall into one of two types: series and parallel.
C) Correct. In a parallel circuit, electrons are given a choice of paths to flow along. Some strings of Christmas lights use this type of circuit, so if one bulb burns out then the others continue to light. Houses are wired using parallel circuits.
D) Incorrect. Circuits fall into one of two types: series and parallel.
You might also like to view...
When does an off-delay relay provide the time delay?
a. Before the relay is de-energized b. After the relay is de-energized c. Before the relay is energized d. After the relay is energized
A concrete pavement is to be constructed for a 4-lane urban expressway on a subgrade with an effective modulus of subgrade reaction k of 100 lb/in3. The accumulated equivalent axle load for the design period is 3.25 × 106. The initial and terminal serviceability indices are 4.5 and 2.5, respectively. Using the AASHTO design method determine a suitable thickness of the concrete pavement, if the working stress of the concrete is 600 lb/in2 and the modulus of elasticity is 5 × 106 lb/in2. Take the overall standard deviation, So, as 0.30, the load transfer coefficient, J, as 3.2, the drainage coefficient as 0.9, and R=95%.
What will be an ideal response?
Geothermal heat pumps get most of their heat from:
A) The ground. B) The surrounding air. C) The electricity used to operate the compressor. D) A separate gas-fired boiler.
Which installation phase is performed first?
A) Equipment placement B) Electrical connection C) Ductwork installation D) Piping installation