Skills and Trades

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Calculate the amount of heat required to change 5 lb of 32F ice to water. A) No extra heat is ... Started by madam-professor	1 Replies 32 Views	Jul 24, 2018 by ktidd
Hacksaws cut: A) On both forward and back strokes. B) In helical oscillation created by ... Started by KimWrice	1 Replies 39 Views	Jul 24, 2018 by bigsis44
What would be the final volume of 4 ft3 of gas that is compressed from 60F at 70 psig to 150 at 210 ... Started by K@	1 Replies 40 Views	Jul 24, 2018 by taylorsonier
One disadvantage of infrared thermometers is that they: A) Are generally less accurate than ... Started by luminitza	3 Replies 39 Views	Jul 24, 2018 by krakiolit
What is an absolute temperature scale? A) A temperature scale that uses sensitive wireless ... Started by DyllonKazuo	1 Replies 89 Views	Jul 24, 2018 by lindahyatt42
Why should special safety protection always be used when driving ballistic concrete nails? A) ... Started by mwit1967	1 Replies 46 Views	Jul 24, 2018 by maaaaaaaaaa
Ballistic concrete nails are driven in using: A) A small charge that resembles a .22-caliber ... Started by amal	1 Replies 59 Views	Jul 24, 2018 by matt95
What type of screws are used on electrical panels? A) Wood screws B) Self-tapping sheet-metal ... Started by jazziefee	3 Replies 42 Views	Jul 24, 2018 by jamesnevil303
Why are the ends of round-tipped sheet-metal screws not threaded? A) To protect against damaging ... Started by sdfghj	1 Replies 59 Views	Jul 24, 2018 by aadams68
What type of head is the most common for screws used on unit covers? A) Hex head B) Allen head C) ... Started by 123654777	1 Replies 75 Views	Jul 24, 2018 by ryhom
Pointed, self-threading, round-tipped, and self-drilling are all types of: A) Rivets. B) ... Started by TFauchery	1 Replies 57 Views	Jul 24, 2018 by britb2u
Why are slotted-head screws usually installed manually using a flat-blade screwdriver? A) It is ... Started by Themember4	3 Replies 36 Views	Jul 24, 2018 by vickyvicksss
What type of thread does a 2 3/8 NF-24 bolt have? A) National fine, 24 ft-lb of torque B) ... Started by cabate	1 Replies 20 Views	Jul 24, 2018 by ghepp
A 5/16-in bolt with national fine threads will have: A) 18 threads per inch. B) 16 threads per ... Started by tfester	1 Replies 63 Views	Jul 24, 2018 by amandanbreshears
A 5/16-in bolt with national coarse threads will have: A) 16 threads per inch. B) 18 threads per ... Started by CBme	1 Replies 66 Views	Jul 24, 2018 by kaillie
Refrigerant quantities in air-conditioning systems are often expressed in: A) Grains, grams, or ... Started by joblessjake	3 Replies 80 Views	Jul 24, 2018 by canderson530
The SI unit for mass (and weight) used today is: A) Ounce. B) Meter. C) Kilogram. D) ... Started by Alygatorr01285	1 Replies 25 Views	Jul 24, 2018 by jgranad15
For which of the following measurements is area used? A) Surfaces B) Lines C) Depth D) ... Started by arivle123	1 Replies 10 Views	Jul 24, 2018 by janieazgirl
How many grains are in a pound? A) 144 B) 12 C) 16 D) 7,000 ... Started by erika	1 Replies 13 Views	Jul 24, 2018 by manuelcastillo
What type of measurement is stated in square feet? A) Area B) Length C) Angularity D) ... Started by bclement10	3 Replies 53 Views	Jul 24, 2018 by potomatos
The area of a 20--24-inch filter is: A) 20 24 = 480 square inches. B) 20 square inches with a ... Started by abern	1 Replies 74 Views	Jul 24, 2018 by nhea
Area measurements are used to measure: A) Location within a city. B) The distance between cities. ... Started by nelaaney	1 Replies 30 Views	Jul 24, 2018 by cpetit11
Which basic principle is one that influences how all HVACR systems work? A) An increase in ... Started by jeatrice	1 Replies 64 Views	Jul 24, 2018 by dominiqueenicolee
A thorough knowledge of the properties of matter is necessary to: A) Explain to a customer what ... Started by shofmannx20	3 Replies 18 Views	Jul 24, 2018 by alexanderhamilton
It is important to the HVACR technician to understand the changes of state of matter because: A) ... Started by wenmo	1 Replies 24 Views	Jul 24, 2018 by Brenm