Wind loads can be minimized by mounting arrays no closer than: four feet from the edge of the roof two feet from the edge of the roof three feet from the edge of the roof 18 inches from the edge of the roof
Which of the following locations for a roof array is likely to experience the most drag? Syracuse, New York Tucson. Arizona Baton Rouge, Louisiana Orlando, Florida
Which of the following components must be protected against temperature extremes? Batteries DC disconnect Grounding system PV panels
Which PV cells are formed using thin slices of a single crystal? Thin-film Polycrystalline Amorphous Mono-crystalline
Which of the following PV cells is likely to have the highest efficiency? Amorphous Monocrystalline Polycrystalline Thin film
3.- El codigo especifica el limite de la temperatura del agua que puede ser descargada en un sistema de drenaje en : 100^circ C 120^circ F 140^circ F 150^circ F
Which tool is used to create a patch cord by fixing a plug to a cable? Punch down tool Cable crimper Wire stripper Cable tester
When voltage is measured with the voltmeter portion of a digital multimeter,the leads should be connected __ to the portion of the circuit being tested. Select one: A. in series B. behind C C. in parallel D. in front of
What is the major function of the charged coupled device or complimentary metal oxide semiconductor? 1) To convert light to an electronic signal 2) To convert analog to digital 3) To compress the digital signal 4) To split white light into three primary colors
A Miller cycle engine relies more on the __ to create the needed cylinder pressure for combustion a. Piston b. Crankshaft c. Camshaft d. Turbocharger
Question Three (a)A water heater is to be installed in a bathroom Specify the; (i)Mounting height for its switch. (02 marks) (ii)Rating current for its protective device. (iii)Size of the cable to b e used for its installation. (02 marks) (b)If the supply of the water heater in 3(c a), is from a two-way consumer's unit.draw it's; (02 marks) (i)Block diagram. (06 marks) (ii)Wiring diagram. (08 marks) Question Four You have been given a task to install earthing system in a new building As a trained technician; (a)List four factors you will consider when selecting a site for the above installation. (b)Describe two methods you will use to improve the conductivity of the earthing. (04 marks) (04 marks) (c)Name four materials and two tools you will need to carn out the task. (06 marks) (d)Explain a step -by-step procedur e you wil I follow to carry out the task. (06 marks) Question Five (a)Define the following terms as applied to lightning protection. (i)Down conductor (02 marks) (ii) Air termination (02 marks) (iii)Test ioint (02 marks) (iv)Zone of protection (02 marks) (b)Identify four types of buildings which require protectior from lightning. (c)with the aid of diagram show the zone of protection offered by two vertical lightning protection system. (08 marks) (04 marks)
Chain slings cannot be damaged by heat. True False
During welding preparations what should be set up around the welding area? are blowers flash shields cotton curtains oxygen cylinders
Before engaging the PTO switch you should make sure that the controls are in neutral position. True False
What is a benefit of a grounded electrical system for workers? A. It prevents power outages in the building B. It eliminates the risk of electrical shock entirely C. It provides a safe path for current to flow in case of a fault, reducing the risk of shock D. It allows workers to touch live wires without harm
What is the minimum sire standard main breaker required for a farm building service where the expected simultaneously operated load is 118 amperes? 90 amperes 100 amperes 110 amperes 125 amperes
What is a potential hazard when working with electricity? A. Improved productivity B. Increased employee satisfaction C. Electrical shock D. Faster project completion
When you add radiator fluid to the reservoir,how full should it be? Select the correct answer and click Submit. ) Up to the "Full"mark Up to the very top of the reservoir Up to the "Add"mark
Where is the transmission dipstick normally located on a rear-wheel drive vehicle? Select the correct answer and click Submit. At the rear of the engine near the firewall Directly above the steering column and in the middle of the engine At the front of the engine
What is one factor that can wear out your vehicle's belts and hoses? Select the correct option and submit. Consistent temperatures Dirt and debris Humidity Too much cleaning
