Skills and Trades

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What is the purpose of staging thermostats? A) To allow systems to operate at reduced capacity ... Started by Shelles	1 Replies 48 Views	Jul 24, 2018 by okolip
A control that responds to changes in pressure is called a: A) Pressure switch. B) Time clock. C) ... Started by dmcintosh	3 Replies 73 Views	Jul 24, 2018 by Brenm
Two common pressure-sensing devices used in pressure controls are: A) Capacitive transducer and ... Started by lracut11	1 Replies 65 Views	Jul 24, 2018 by carojassy25
The point in an electrical circuit schematic where high voltage is stepped down to low voltage is at ... Started by londonang	1 Replies 91 Views	Jul 24, 2018 by jennafosdick
What is the formula to figure out how much electric heat is produced by an electric furnace? A) ... Started by asan beg	1 Replies 55 Views	Jul 24, 2018 by kilada
The instructions ona low-pressure switch read cut-out is cut-in less differential. To set the switch ... Started by sdfghj	3 Replies 76 Views	Jul 24, 2018 by joanwhite
When do normally open relay contacts close? A) They cannot close because they are open contacts. ... Started by s.tung	1 Replies 163 Views	Jul 24, 2018 by dpost18
Baseboard heaters are ideally suited for where? A) Bathroom B) Basement C) Kitchen D) ... Started by nautica902	1 Replies 108 Views	Jul 24, 2018 by Carissamariew
The bimetal element is composed of: A) A rare earth element known as bimetal. B) A metal alloy ... Started by javeds	1 Replies 56 Views	Jul 24, 2018 by akemokai
What device can best be described as an electrically operated switch? A) A transformer B) A ... Started by jman1234	3 Replies 50 Views	Jul 24, 2018 by Eazy416
What material are electric heater coils often made from? A) Steel and chrome alloy wire B) Copper ... Started by pepyto	1 Replies 60 Views	Jul 24, 2018 by 14vl19
Installation wiring diagrams are used for: A) Showing the location of necessary field wiring. B) ... Started by Awilson837	1 Replies 75 Views	Jul 24, 2018 by 31809pancho
How is field wiring shown on most diagrams? A) In red B) In blue C) With dashed lines D) With ... Started by lilldybug07	1 Replies 55 Views	Jul 24, 2018 by kjo;oj
What information does a factual diagram give that a ladder diagram does not? A) What the actual ... Started by 09madisonrousseau09	3 Replies 95 Views	Jul 24, 2018 by Jevvish
A fuse protects an electrical circuit by: A) Using a material that limits the amount of current ... Started by audragclark	1 Replies 43 Views	Jul 24, 2018 by janeli1
Which of the following describes a dual-element fuse? A) It provides each fuse with a second ... Started by MGLQZ	1 Replies 85 Views	Jul 24, 2018 by aprice35067
When replacing a fuse you must match the: A) Volt, amp, instantaneous current, and physical size. ... Started by burton19126	1 Replies 89 Views	Jul 24, 2018 by okolip
Which location is the best for installing electric baseboard heaters? A) Along the walls of an ... Started by yoooooman	3 Replies 50 Views	Jul 24, 2018 by iman
What type of thermostat is typically used with electric baseboard heaters? A) Wireless ... Started by kamilo84	1 Replies 61 Views	Jul 24, 2018 by 6ana001
Each electric furnace is designed to hold which of the following? A) A specific type and size of ... Started by Bernana	1 Replies 79 Views	Jul 24, 2018 by cassie_ragen
A normally closed set of relay contacts will close when: A) Power is not applied to the contacts. ... Started by Bob-Dole	1 Replies 161 Views	Jul 24, 2018 by af
A system that controls loads by opening and closing electrically operated mechanical switches is ... Started by silviawilliams41	3 Replies 158 Views	Jul 24, 2018 by sarajane1989
What controls the heating elements in most electric furnaces? A) Heat relays B) Sequencers C) ... Started by Destiiny22	1 Replies 61 Views	Jul 24, 2018 by dpost18
Inline cartridge fuses are used: A) To protect individual heating plates, groups of heating ... Started by tsand2	1 Replies 137 Views	Jul 24, 2018 by perkiness
What is the advantage of a fusible link? A) The melting temperature of the alloy remains constant ... Started by jake	1 Replies 45 Views	Jul 24, 2018 by AngeliqueG