Wires are fed through conduit by hand or by using __ Electrical tape Fish tape Wireways Wire ties

How do you calculate the temperature difference when determining the CFM for a gas furnace? By using a two -channel thermometer in the supply and return air plenums of the furnace, then subtracting the measured return air temperature from the measured supply air temperature By adding the supply air and return air temperatures measured using a two-channel thermometer within the supply and return air plenums at the gas furnace Subtracting the return air temperature from the outside temperature, measured using a digital thermometer By adding the return air temperature from the outside temperature, measured using a digital thermometer

All of the following are components of a disc brake assembly except: a. Caliper b. Pads c. Return spring d. Hub and rotor

Drum scoring can be caused by all of the following except: a. Inferior brake lining materials b. Excessive dust build up c. Changes in drum metallurgy d. Worn linings

3. En una instalación de agua caliente en una zona de gran altitud (más de 5,000 pies), ¿qué debe considerarse al seleccionar el calentador? A) El tipo de válvula check B) El diámetro del tanque C) La reducción de eficiencia del quemador 10 puntc

2. Un calentador de agua de paso . (sin tanque)requiere: A) Menor capacidad de energía instantánea que uno con tanque B) Más espacio que uno convencional C) Una fuente de energía con alta capacidad inmediata x 10 punt

A rather recent innovation for residential metering is "time-based" metering, also referred to as "real- time" or "smart" metering. True False

When the emergency heat feature of a heat pump is activated, the usual effect on the heat pump is the gas or oil furnace is disabled. the compressor and electric heaters operate together. electric heaters operate if the compression heat is inadequate. only the supplemental heat source and the indoor blower operate.

While welding, ventilation should be placed as close to the fume source as practical. True False

Question 2.08 What type of gas meter test is performed to detect gas leakage? a. Gas hazard test b. Meter clock test c. Meter fluctuation test d. Pressure surge test

Hot Questions

What determines the maximum fuel outlet pressure from a mechanical diaphragm pump? a. Fuel line restriction b. Engine rpm c. Spring force d. Return check valve

How can a process technician prevent a dust explosion? A Remove moisture B Add moisture C Open a window D Keep particles in a contained area

A pressure switch is rated according to its __ pressure range. operating resting maximum minimum

Q1: Which of the following steps are NOT part of a transfer case fluid inspection? 1. Locate the oil fill plug on the transfer case and remove it using air tools. 2. Use your finger to check the oil level in the fill plug hole. 3. Add the correct amount and type of fluid if necessary. 4. Reinstall the transfer case fill plug hole and tighten to specification.

You need to install a pull box in a run of conduit.The conduit contains twenty 18 AWG wires . What is the minimum size $4''$ square box you could use? Use the following table to determine the MINIMUM size $4''$ square box required.

Pipe wrenches usually come in different sizes which are located: It doesn't matter what size the wrench is it'll work anyways. On the side of the wrench. On the internet.

A-CAC melts the base metal with a high-current electric arc between the base metal and the end of a(n) __ a) high-frequency pilot arc b) idle arc c) carbon-graphite electrode d) plasma jet

The electronic variable displacemen compressor is based on what type of compressor design? A Rotary compressor design B Swash plate compressor design C Scroll compressor design D Vane compressor design

Which is a safety procedure related to fire hose testing? Always wear full structural PPE Only use portable tanks as a water source Only walk near pressurized hose when necessary Always test hoses in lengths greater than 300 feet (100 m)

a system with low duty factor is imaging at a __ depth than a system with high duty factor. shallower Cannot be determinec using this information deeper Duty Factor and depth are not related