BUNDLE - NATE EXAMS

On a new oil furnace installation, the oil pump pressure is found to be 50 PSI. which of the following actions should be taken? a. Increase the pump pressure. b. Add a new fuel filter. c. Reduce the pump pressure. d. No action needed. A After installation and 20 min. of run time and oi...

<question: The density of air is A: How much air weighs per cubic foot B: How much volume one pound of air occupies C: The ratio of the weight of water to that of the same volume of water D: The ratio of the amount of water vapor contained in a cu. ft. of air to the amount of moisture...

Charging a heat pump with refrigerant is best accomplished in the _______ mode. A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode B: Cooling mode Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump mo...

Which of the following is known as the "silent killer"? A: Carbon dioxide B: Carbon tetrachloride C: Carbon monoxide D: Monodioxide - ANSWER-C: Carbon monoxide ___________ ventilation is a control strategy used to maintain a high oxygen content in buildings where a healthy e...

With the condensing pressure and compressor speed remaining constant, a decrease in suction pressure will cause a(n): a. Decrease in compressor capacity and decrease in current. b. Increase in compressor capacity and decrease in current. c. Increase in compressor capacity and increase in curren...

Pneumatic controls utilize __________ power for their operation. A: Air B: Water C: Electrical D: Solar A: Air Setpoint is: A: The desired condition B: The current condition C: The difference between cut-in and cut-out D: The very center of the range A: The desired c...

A particular cleaning solution is made by mixing a liquid cleaning concentrate with water. the instructions specify mixing 1 quart of concentrate with 14 quarts of water. a tech wishes to prep 60 quarts of mixed cleaning solution. how many quarts of cleaning concentrate will be needed. 4 A t...

a (Centrifugal) Which of the following compressors are considered a dynamic compressor? a. Centrifugal b. Reciprocating d. Rotary c. Scroll b (Superheated vapor / sub cooled liquid) What is the condition of the refrigerant as it enters and leaves the condensing coil of a typical light...

formula to convert celsius to fahrenheit F = (1.8 x C) + 32 formula to convert fahrenheit to celsius C = .56 (F - 32) specific heat the amount of heat required to raise 1 lb of a substance 1 degree fahrenheit sensible heat Is the heat that came be measured or sensed by a t...

The Fahrenheit scale is based on boiling water at sea level at what temperature? A: 459 degrees B: 212 degrees C: 180 degrees D: 100 degrees B: 212 degrees Zero pounds gauge corresponds on the absolute scale to: A: 144 B: 212 C: 14.7 D: zero C: 14.7 Hidden hea...

A judgment - ANSWER-An opinion is Easy to use - ANSWER-Which of the following is a future of a product or service A truth - ANSWER-A fact is Saves time - ANSWER-Which of the following is a benefit of a product or service DOT - ANSWER-Which of the following agencies has jurisdiction over ...

what type of meter is most appropriate when a tech must determine voltage? voltmeter temp at which moisture begins to condense on objects? dew point btu's equivalent to 1 watt hour A. 3.418 B. 3.413 C. 3.213 D. 4.314 3.413 btu electrical test meter that test volts, ohms ...

Generally, vibration eliminators in piping should be installed: A: At a 45 degree angle B: At a 90 degree angle C: Perpendicular to the compressor crankshaft D: Parallel to the compressor crankshaft D: Parallel to the compressor crankshaft If you purchased ten filter-driers for $...

An air conditioning technician is working in the basement of a large B37public building. The technician notices several unsafe and dangerous conditions. Of the following conditions that are noticed, which is the most dangerous and should be reported immediately? A: Gas leaking from a cracked pipe...