Skills and Trades

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What is the total resistance of the circuit in the figure above? a. 19 ohms b. 29 ohms c. 30 ... Started by skymedlock	3 Replies 192 Views	Jul 24, 2018 by verrinzo
The type of form system that can be as wide as 50 feet are _____. a. slip forms b. job-built ... Started by audragclark	1 Replies 88 Views	Jul 24, 2018 by xoxo123
Flexible wall forms are designed to _____. a. make stripping easier b. be rolled for compact ... Started by saliriagwu	1 Replies 82 Views	Jul 24, 2018 by k.lashomb
A plasma jet may reach a temperature in excess of _____. a. 20,000F b. 30,000F c. 40,000F d. ... Started by PhilipSeeMore	1 Replies 87 Views	Jul 24, 2018 by mistyjohnson
An effective method used to remove an old or inferior weld is _____. a. plasma arc cutting b. ... Started by Sportsfan2111	3 Replies 171 Views	Jul 24, 2018 by Sierray
The solder most commonly used on low-pressure copper fittings is made from _____. a. 100 lead b. ... Started by ishan	1 Replies 173 Views	Jul 24, 2018 by covalentbond
Grease and oil must be kept away from oxygen tanks used for brazing because they _____. a. will ... Started by joesmith1212	1 Replies 83 Views	Jul 24, 2018 by ky860224
When using a brazing flux, it should be applied _____. a. only to the tube end b. to both the ... Started by asmith134	1 Replies 67 Views	Jul 24, 2018 by heinisk01
When copper is being brazed to steel _____. a. the technique is identical to brazing copper to ... Started by HCHenry	3 Replies 239 Views	Jul 24, 2018 by mcinincha279
When soldering 1-1/2 tubing in a horizontal position, you should _____. a. feed the solder from a ... Started by melina_rosy	1 Replies 88 Views	Jul 24, 2018 by joneynes
Prior to leak testing, and after the fitting is finger-tight, compression fitting nuts should be ... Started by dmcintosh	1 Replies 79 Views	Jul 24, 2018 by scrocafella
The type of support that can be used to hang tubing from above or support it from below or even ... Started by Garrulous	1 Replies 112 Views	Jul 24, 2018 by itsakadoozi
The first thing to check when there is a complaint of too much humidity is the _____. a. water ... Started by CORALGRILL2014	3 Replies 154 Views	Jul 24, 2018 by kingdude89
Which statement about the operating sequence of an accessory is correct? a. The operating ... Started by urbanoutfitters	1 Replies 47 Views	Jul 24, 2018 by juicepod
What type of flame is produced when about 50 percent of the required combustion air is mixed with ... Started by Tazate	1 Replies 55 Views	Jul 24, 2018 by ktidd
What forms as the result of the incomplete combustion of natural gas? a. Ozone b. Nitrogen c. ... Started by soccerdreamer_17	1 Replies 68 Views	Jul 24, 2018 by Bsand8
When selecting a gas furnace, how is its heating capacity determined? a. Its input rating must ... Started by Starlight	3 Replies 105 Views	Jul 24, 2018 by Ptupou85
What happens first when there is a call-for-heat signal to a furnace equipped with a motor-driven ... Started by amal	1 Replies 65 Views	Jul 24, 2018 by amy.lauersdorf90
Which of the following is an incorrect statement regarding the venting of a condensing furnace? ... Started by segrsyd	1 Replies 98 Views	Jul 24, 2018 by matt95
What material is recommended for a vent connector on all non-condensing, induced-draft furnace ... Started by maychende	1 Replies 126 Views	Jul 24, 2018 by Koolkid240
Which type of vent material is not of double-wall construction? a. PVC b. Type B-W c. Type L ... Started by Chelseaamend	3 Replies 175 Views	Jul 24, 2018 by Dnite
Which gas furnace type produces water during normal operation? a. Natural-draft b. Induced-draft ... Started by cookcarl	1 Replies 94 Views	Jul 24, 2018 by harveenkau8139
When reviewing the location of main electrical runs and fire sprinkler system lines on a floor plan ... Started by KWilfred	1 Replies 76 Views	Jul 24, 2018 by matt
Most zone dampers in zoning systems _____. a. are powered open and spring-return closed b. are ... Started by tatyanajohnson	1 Replies 71 Views	Jul 24, 2018 by softEldritch
The blowers of high-sidewall ductless indoor units _____. a. are usually propeller fans b. use ... Started by joesmith1212	3 Replies 64 Views	Jul 24, 2018 by kthug