Automotive hvac - Study guides, Class notes & Summaries

Tech A says that the EPA regulates automotive air-conditioning systems. Tech B says that EPA tests air-conditioning systems every 5 years. Who is correct? A. Tech A B. Tech B C. Both A and B D. Neither A nor B correct answer: C. Both A and B Which of these heating/cooling systems was the first to be free of apparent harm to passengers? A. Passing air over coils of compressed ammonia B. Transferring heat to the cabin from the exhaust system C. Bringing a small gas lamp into the cabin f...

which battery rating is tested at 0 deg F (-18 C)? - ANSWER-cold-cranking amperes (CCA) battery electrolyte is a mixture of water and ________. - ANSWER-sulfuric acid each automotive battery cell has an electrical potential of how many volts? - ANSWER-2.1 V the largest percentage of automotive battery electrolyte is ____________. - ANSWER-sulfuric acid many GM vehicles use a group 78 size battery. true or false? - ANSWER-true like charges _________. - ANSWER-repel which unit of...

Having a regular HVAC filter replacement plan can help: A. Protect the system components B. Double the system's airflow C. Humidify the airflow D. Sanitize the system components - ANSWER-A. Protect the system components According to ACR, the NADCA Standard, properly performed HVAC system cleaning services should: A. Eliminate all contamination B. Restore the internal insulation to an "as new" condition C. Restore the evaporator coil to its original pressure drop D. Render the syste...

Having a regular HVAC filter replacement plan can help: A. Protect the system components B. Double the system's airflow C. Humidify the airflow D. Sanitize the system components - ANSWER-A. Protect the system components According to ACR, the NADCA Standard, properly performed HVAC system cleaning services should: A. Eliminate all contamination B. Restore the internal insulation to an "as new" condition C. Restore the evaporator coil to its original pressure drop D. Render the syste...

Chapter 9 Career Planning and DevelopmentOccupation - correct answer A task or series of tasks that is performed to provide a good service. People are hired to fill occupations, and they are paid for the work they perform. Career - correct answer A goal for work that is fulfilled through an occupation or series of occupations. Career Planning - correct answer The process of studying careers, assessing yourself in terms of careers, and making decisions about a future career. Career Plann...

Auto Final Exam Questions and Answers 100% Pass which part is the cylinder head bolted to? the block What is the ratio of coolant to water in a typical automotive cooling system? 50:50 Which material are new model cylinder heads made from? aluminum Who issues technical service bulletins? manufacturers If blue smoke is seen at the tailpipe when an engine is started, which part(s) is/are most likely worn out? valve stem seals Technician A says a water pump controls the flow of coolant through an...

Which unit contains a desiccant to remove moisture from the system? -ANSWER Receiver dryer and Accumulator In a piston type compressor, the pistons are driven by what? -ANSWER Swash plate, Crankshaft or Wobble plate (All of the Above) The basic design of compressors include what? -ANSWER Piston, Vane and Scroll The Wobble plate is moved to the high angle position for max output when the cooling load is high (True or False) -ANSWER True The wobble plate angle is controlled by the pres...

RCDD Practice Test Latest Questions With Complete Solutions. C If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB B The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. What is t...

Introduction: These comprehensive classroom notes delve into the fundamental concepts and principles of Refrigeration & Air Conditioning, as expounded by the esteemed author R.S. Khurmi. Designed to enhance your understanding of HVAC systems, these notes provide a comprehensive overview of various topics including thermodynamics, heat transfer, refrigeration cycles, system design, and practical applications. Thermodynamics: Gain a solid foundation in the principles of thermodynamics as it r...

2023 FireFighter 1 and 2 Study Guide 2023/2024 GRADED A In a typical fire department rank structure, an assistant chief reports to the _ . section chief chief of the department command staff battalion chief Ans: b. chief of the department Which term can be defined as the set of guidelines that a department establishes for its firefighters? Unity of command Span of control Discipline Training Ans: c. discipline In a typical fire department rank structure, an assistant chief repor...