Skills and Trades

Replies / Views	Last post
To save money by ensuring that tools will not have to be replaced as frequently, you should pay ... Started by piesebel	1 Replies 74 Views	Jul 24, 2018 by Christopher
Carry hand tools to and from the work site in a _____. a. durable canvas bag b. properly gloved ... Started by notis	1 Replies 103 Views	Jul 24, 2018 by Pariscourtney
Most plumbers prefer working with a 1-inch-wide steel tape because it _____. a. is the most ... Started by robinn137	3 Replies 130 Views	Jul 24, 2018 by EAN94
To make a clean break in cast iron pipe, it is best to use a _____. a. hammer and cold chisel b. ... Started by Arii_bell	1 Replies 69 Views	Jul 24, 2018 by wuly
Plumbing connections can be soldered at temperatures between _____. a. 100F and 300F b. 200F and ... Started by amal	1 Replies 136 Views	Jul 24, 2018 by kingfahad97
In VAV systems with a return air fan, the fan provides _____. a. the same amount of air that the ... Started by jc611	1 Replies 57 Views	Jul 24, 2018 by abctaiwan
Assume a single-zone constant-volume system with an economizer is installed. In the occupied mode, ... Started by 123654777	3 Replies 94 Views	Jul 24, 2018 by Cnarkel
What is one characteristic that sets VVT systems apart from the other approaches? a. The need for ... Started by storky111	1 Replies 65 Views	Jul 24, 2018 by lkanara2
In a VAV system, the demand for heat is satisfied by _____. a. a heater attached to the VAV ... Started by karen	1 Replies 60 Views	Jul 24, 2018 by leahchrapun
What characteristic makes a grille into a register? a. An adjustable damper installed behind the ... Started by danielfitts88	1 Replies 82 Views	Jul 24, 2018 by T4T
In order to modulate the flow of supply air, VAV systems may use inlet guide vanes on the fan inlet ... Started by naturalchemist	3 Replies 173 Views	Jul 24, 2018 by DylanD1323
The simplest form of economizer control is the _____. a. powered exhaust method b. integrated ... Started by soccerdreamer_17	1 Replies 79 Views	Jul 24, 2018 by okolip
Comfort is normally associated with the air properties of _____. a. temperature and dew point b. ... Started by urbanoutfitters	1 Replies 71 Views	Jul 24, 2018 by nicoleclaire22
An indication that proves all liquid refrigerant has changed into a vapor within the evaporator is ... Started by crazycityslicker	1 Replies 69 Views	Jul 24, 2018 by Rilsmarie951
What is needed for resistive electric defrost heaters to function properly? a. A solid-state ... Started by a0266361136	3 Replies 86 Views	Jul 24, 2018 by Smiles0805
What type of compressor is often used with walk-in coolers? a. Rotary b. Screw c. Semi-hermetic ... Started by Melani1276	1 Replies 128 Views	Jul 24, 2018 by irishcancer18
Where is an accumulator normally installed? a. Suction line b. Liquid line c. Discharge line ... Started by azncindy619	1 Replies 283 Views	Jul 24, 2018 by brittanywood
A crankcase pressure regulating valve can help prevent _____. a. refrigerant overcharge b. rapid ... Started by bb	1 Replies 131 Views	Jul 24, 2018 by josephsuarez
What factor(s) primarily determine solenoid valve selection? a. Refrigerant line size b. Flow ... Started by Capo	3 Replies 129 Views	Jul 24, 2018 by Zack0mack0101@yahoo.com
Evaporator coils found in reach-in freezers are often corroded by _____. a. repeated defrosts b. ... Started by dejastew	1 Replies 107 Views	Jul 24, 2018 by missalyssa26
Which of the following devices measures ohms, amps, and volts? a. Multimeter b. Phase tester c. ... Started by Lisaclaire	1 Replies 87 Views	Jul 24, 2018 by rnehls
Which instrument should be used to verify that there is power available to run a three-phase motor ... Started by DelorasTo	1 Replies 61 Views	Jul 24, 2018 by zogaridan
Certified meters are marked as to their category rating on the _____. a. meter leads b. meter ... Started by OSWALD	3 Replies 184 Views	Jul 24, 2018 by jesse.fleming
What is the lowest acceptable overvoltage category rating for an ammeter that will be used to test ... Started by naturalchemist	1 Replies 55 Views	Jul 24, 2018 by Pswine
The typical applied megohmmeter voltage in 600V class systems is _____. a. 150 to 300V b. 300 to ... Started by Brittanyd9008	1 Replies 43 Views	Jul 24, 2018 by Bison