You are driving with double trailers and must use your brakes to avoid a crash. Calculate the net energy change in kilojoules per mole that takes place on formation of MgF2_22(s) from the elements: Heat of sublimation for Mg(s) = 147.7 kJ/mol Eea_{ea}ea for F(g) = -328 kJ>mol, Bond dissociation energy for F2_22(g) = 158 kJ>mol Ei1_{i1}i1 for Mg(g) = 737.7 kJ>mol, Electrostatic interactions in MgF2_22(s) = -2957 kJ/mol Ei2_{i2}i2 for Mg(g) = 1450.7 kJ/mol. Correct answer percentage. 4. NPT thumbscrew style design enables easy installation. 3. 2023 WV Doubles - Triples CDL Practice Test 1 - CristCDL.com This section explains how important it is to be careful when driving with more than one trailer, how to couple and uncouple correctly, and about inspecting doubles and triples carefully. The Doubles and Triples written CDL Exam is required for your doubles and triples endorsement. Be more careful in adverse conditions. When testing the coupling of the double trailer the landing gears of the rear trailer should be: You want to hook your combination to a second trailer that has no spring brakes. Doubles and Triples CDL Practice Test - Class A Drivers With the red knob pushed in on the tractor dash, the service line should have air in it. you are doing a walkaround inspection of a double or triple trailer rig. You should be sure the converter dolly air tank drain . B. 0000002446 00000 n weather passes. Which the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. Amazon.com: Air Tank Drain Valve When inspecting the air brakes on doubles and triples, you wait for air pressure to reach normal, then push in the red trailer air supply knob. Allow much more space than is needed for ideal driving condition. Any vehicle required by federal regulations to be placarded while transporting hazardous materials. When checking the coupling system, make sure that the locking jaws are around the shank of the. When doing a walkaround inspection of a double or triple trailer, the shut-off valves should be _______ at the rear(s) of the front trailer(s) and ________ at the rear of the last trailer. In double and triple trailers, the trailer air supply control should pop or _________ when air pressure drops into the range of 20 to 45 psi. some large trucks have curved (convex or spot) mirrors. A. brake and downshift in a curve 2023 PA Doubles - Triples CDL Practice Test 3 - CristCDL.com You are doing a walkaround inspection of a double or triple trailer rig. The topics with which you will want to be expertly familiar are: There isnt as much information to be studied in the classroom or in the CDL manual regarding doubles and triples, so in-lot and on-the-road practice will help you pass this test. When pulling a single trailer with a Shut-Off Valve, the valves must be in the: Trailers built before what year may not be equipped with trailer spring brakes? Some do. You are visually checking the coupling of a converter dolly to the rear trailer. Air Storage and Drain Tanks: Air storage tanks are used to hold compressed air. If you crossed the air lines, you could drive away, but you would not have trailer brakes. If one air system is very low on pressure _______. Each tank has a drain valve on it, and you should drain each tank every day. C. open, except the one connected to the rear trailer should be closed, During normal operation the brakes on double and triple trailers are controlled by the: These dollies will have a yellow lamp on the left side of the dolly. Once you are finished, click the button below. When does the Driver's manual say you should disable the steering axle brake? B. for doubles and triples, the fifth wheel should be all the way towards the tractor Pintle-eye of dolly in place in pintle hook of trailer (s). B. keep gentle pressure on the brakes while going through the water and for a short distance after coming out There is no requirement or exact standard for color coding. Should the pintle hook be latched or unlatched when backing a dolly under the second trailer? The converter dolly air tank drain valve on coupled double/triple trailers should be: Answer: Closed. All of the above, 6. None of the above, 4. Visually check to make sure that the rear trailer is slightly lower than the center of the A major leak in the emergency line will cause the tractor protection valve to close and the trailer emergency brakes to come on. 21 0 obj << /Linearized 1 /O 23 /H [ 1162 213 ] /L 29759 /E 11109 /N 7 /T 29221 >> endobj xref 21 38 0000000016 00000 n Remember: The trailer air brakes are supplied with air using the emergency line (also called the supply line). the road is dry & visibility is good. A Feel Free to add additional fields for the Quiz Taker to complete using the "Add Fields" options to the right. If you feel You can test that air is flowing to all trailers by opening? When the road is dry The lighter trailer should be in the rear. Compressed air usually has some water and some compressor oil in it. 0000004668 00000 n on kingpin. Air pressure is sent from the air tanks to the brakes by relay valves. True False True If you want to couple a second trailer to you combiantion vehicle, secure it by using the: Trailer emergency air brakes. Each trailer and converter dolly has one or more air tanks. How much space should be between the upper and lower fifth wheels? It is important to check the height of the trailer before connecting a converter dolly to a trailer. These dollies will have a yellow lamp on the left side of the dolly Questions You Should Know For Doubles And Triples 1. The dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. When you do this, you should hear: 0000001582 00000 n You must check that all shut-off valves are in the open position except the ones at the back of the last trailer, which must be closed. Speed for other vehicles is often too fast for a multi-combination unit! If your converter dolly has to be moved over a distance to bring it to your semitrailer, you should? B. are the easiest to stop since there is no shifting cargo What is a converter dolly? | Samsara You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. The rear trailer does not have shut-off valves. B. you need about four times as much stopping distance at 40 mph as at 20 mph which of these statements about the handling of doubles and triples is true ? A unsafe slow down even further, or better yet, find a safe haven and park until the Before coupling a trailer, you should make sure it is at the right height using? 10 Related Question Question: What does this sign mean? Why should you check for when inspecting the converter dolly? Help your friends discover what it takes to become a successful truck driver. the rig will continue moving in a straight line no matter how much the steering wheel is turned. You are driving with double trailers and must use your brakes to avoid a crash. How do you know if your converter dolly is equipped with antilock brakes? 4. 0000001107 00000 n Should the shut-off valves on the trailers be open or closed on a set of double trailers? Go to the rear of the rig. While doing a walkaround inspection of a double or triple, the converter dolly air tank drain valve should be _______, and the pintle hook should be _______. What three methods can you use to secure a second trailer before coupling? The weight of the individual trailers will have no noticeable effect on the handling of the vehicle, The weight of all trailers should be nearly the same, within 2% of each other. We are here to help. Trailer Parts Superstore - How Air Brakes Work - Eastern Marine Mar 2 - Mar 3. C. 3, You are doing a walk around inspection of a double or triple trailer rig. The application only takes one minute. When connecting a converter dolly to a rear trailer, the trailer height must be adjusted so that it is? C. closed; unlatched, Which of these will result in the best control on a curve? We are an independent company focused on providing valuable motor vehicle and permit practice test information. What three methods can you use to secure a second trailer before coupling? More driving knowledge, questions and answers, online practice tests for obtaining a drivers . That split second that you release the brakes will allow them to match the vehicles road A-dolly. The word part ferrit- means: After 15 years on the road I wanted to help people understand the trucking industry and everything that came with the career and lifestyle of an over the road trucker. B. releasing the pintle hook Flashcards - Doubles Triples Test #3 - FreezingBlue D C and ensuring it is secure. You are driving with double trailers and must use your brakes to avoid a crash. When connecting the glad hands, press the two seals together with the couplers at a 90-degree angle to each other. B. slightly raised B. johnson bar X D5^4aX{Ka)nT)Ac g" endstream endobj 58 0 obj 108 endobj 23 0 obj << /Type /Page /Parent 19 0 R /Resources 24 0 R /Contents [ 31 0 R 33 0 R 35 0 R 46 0 R 48 0 R 50 0 R 52 0 R 54 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 24 0 obj << /ProcSet [ /PDF /Text ] /Font << /F2 37 0 R /F4 40 0 R /TT2 28 0 R /TT4 26 0 R /TT6 42 0 R /TT8 44 0 R >> /ExtGState << /GS1 55 0 R >> /ColorSpace << /Cs5 29 0 R >> >> endobj 25 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 32 /FontBBox [ -222 -325 1072 1037 ] /FontName /ArialMT /ItalicAngle 0 /StemV 0 >> endobj 26 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 121 /Widths [ 278 0 355 0 0 0 0 191 333 333 0 0 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 0 0 0 0 556 0 667 667 722 722 667 611 778 722 278 0 667 556 833 722 778 667 0 722 667 611 722 0 944 0 667 0 0 0 0 0 0 0 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 ] /Encoding /WinAnsiEncoding /BaseFont /ArialMT /FontDescriptor 25 0 R >> endobj 27 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 96 /FontBBox [ -262 -325 1082 1025 ] /FontName /Arial-ItalicMT /ItalicAngle -15 /StemV 0 >> endobj 28 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 118 /Widths [ 278 0 0 0 0 0 0 191 0 0 0 0 0 333 278 278 556 556 556 556 556 556 556 556 0 0 0 0 0 0 0 0 0 0 0 722 722 0 0 0 0 0 0 0 0 833 0 0 667 0 0 0 611 0 0 0 0 0 0 0 0 0 0 0 0 556 556 500 556 556 0 556 0 222 0 0 222 833 556 556 556 0 333 500 0 556 500 ] /Encoding /WinAnsiEncoding /BaseFont /Arial-ItalicMT /FontDescriptor 27 0 R >> endobj 29 0 obj [ /CalRGB << /WhitePoint [ 0.9505 1 1.089 ] /Gamma [ 2.22221 2.22221 2.22221 ] /Matrix [ 0.4124 0.2126 0.0193 0.3576 0.71519 0.1192 0.1805 0.0722 0.9505 ] >> ] endobj 30 0 obj 638 endobj 31 0 obj << /Filter /FlateDecode /Length 30 0 R >> stream rear brakes will not work properly. your vehicle is so long that you must swing wide to make a turn. fifth wheel, so trailer is raised slightly when dolly is pushed under it. The road is dry and visibility is good. Shut-off valves (at rear of trailers, in service and emergency lines): When pulling doubles or triples, what is important to know about the order of the trailers? If there is air there, then there is air towards the cab You want to hook up to the first trailer, then the converter dolly while it is lined up in How can you test that air flows to all trailers? D You must check that all shut-off valves are in the open position except the ones at the back of the last trailer, which must be closed. A The pintle hook should always be secure when the vehicle is in motion. D Why should you not use the trailer hand valve while driving? Delivering to. kingpin. A. you can steer more quickly and safely if you hold the wheel with one hand If you do cross the air lines, supply air will be sent to the service line instead of going to charge the trailer air tanks. King pin. Ideal for replacing a worn, leaky drain valve on a compressor. 10. Florida CDL Handbook | FL CDL Handbook Coupling & Uncoupling for With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. C While inspecting your converter dolly coupling, you should make sure there is _____ between the upper and lower fifth wheel. Single axle converter dollies are the most common type of converter dolly used in the U.S. C-dolly The C-dolly has two separate couplings, side-by-side. None of the above, 2. C. the service brakes slowly move to the fully applied position, Some large trucks have converted or "spot" mirrors. What does the Driver's manual say about how much space you should keep ahead of your truck? Make sure the converter dolly air tank drain valve is closed. Stop the vehicle by gearing down and sparingly B When driving doubles or triples how should they be driven to avoid rollover or jackknifing: While it is general practice to make blue the service line, red the emergency line, and green the electrical line, these colors are not required by any laws or regulations. ADVERTISEMENT ADVERTISEMENT DOUBLE/TRIPLE CDL Flashcards | Chegg.com A. air escape from the open valve It is important not to let water and oil build up in the air tanks. None This has the same value as the %%TOTAL%% Variable on the Final Screen. A. open the shut-off valves at the rear of both trailers The dolly tow bar may fly up Why should you use chocks when parking a trailer without spring brakes? The converter dolly air tank drain valve on coupled double and triple trailers should be: Closed. 2. A turn of the glad hand attached to the hose will join and lock the couplers. Trailer Air Tanks And Shutoff Valves - TruckingTruth How much space should be between the upper and lower fifth wheel? 0000007487 00000 n C what is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer? What is most likely to happen if the trailer protection valve of a double or triple trailer does not function correctly? Be sure pintle-eye of dolly is in place in pintle hook of trailer(s). 0000010705 00000 n A. always keep your vehicle to the right side of your lane On double and triple combinations, you must make sure that which of these is secure? Slow to the safe speed before entering, then accelerate slightly through the curve. Doubles and triples take up more space than other commercial vehicles. A dolly should be pulled out from a rear trailer using? While doing a walkaround inspection of a double or triple, the converter dolly air tank drain valve should be _____, and the pintle hook should be _____. On a triple combination, the shutoff valves on the rear of the last trailer should be? How should the converter dolly air tank drain valve on coupled double HK Extended Tank Drain Assembly Kit with 10 Inch Braided Steel Hose 1/4 Inch Drain Valve and Elbow Fitting for Air Compressor 4.7 (463) $1499 FREE delivery Thu, Mar 9 on $25 of items shipped by Amazon Small Business All Tool Depot Air Compressor Drain Valve Replacement for Craftsman Petcock 072-0001, 072-0006 (1-Pack) 4.2 (20) $649 Which of these is NOT a good thing to do when driving on slippery roads? You may not notice a major leak in the service line until you try to put the brakes on. you should keep atleast __seconds of space ahead of you. coupled to the rear of a tractor-trailer combination forming a double bottom rig, A coupling device of one or two axles and a sixth wheel by which a semitrailer can be 2) the second test is to go out to the trailer to ensure that the parking brakes have indeed applied. All rights reserved Site Map. You must stop, yield to traffic and pedestrians, and only proceed when safe. The service brakes slowly move to the fully applied position CDL: Doubles/Triples Flashcards | Quizlet you are visually checking the coupling of a converter dolly to the rear trailer. Then, the air loss from the leak will lower the air tank pressure quickly. All rights reserved 2022 TestPermit.com, CDL Doubles and Triples Test Question and Answers, Divided Highway Sign: Meaning, Quiz Definition, Example, Shape, Location, Color, Narrow Bridge Sign: Meaning, Quiz Definition, Example, Shape, Location, Color, STOP Sign 2023 Meaning, Quiz Definition, Example, Shape, Location, Color, Crossbuck Sign: Meaning, Definition, Example, Shape, Location, Color, Georgia CDL Permit Practice Test 2023 Study Guide [PDF], Georgia Motorcycle Permit Test 2023 with Study Guide [PDF], Georgia Permit Test 2023 (DDS Practice Test UPDATED), Georgia ADAP Practice Test 2023 Questions Answers Online, Ohio CDL Permit Practice Test 2023 Study Guide [PDF], Ohio Motorcycle Permit Test 2023 Study Guide [PDF]. The dolly tow bar may flip up causing bodily injury and making it very difficult to A 360 degree area of awareness is High Road 2.0! Which of these statements about managing space to the sides is true? If there is When you uncouple twin trailers, the last step is to Converter dollies You want to hook your combination to a second trailer that has no spring brakes. Secure converter gear support in raised position. This has the same value as the %%TIME_USED%% Variable on the Final Screen. B. you should avoid traveling next to others whenever possible Tractor-trailers are considered combination vehicles. speed and start spinning again, in turn stopping your skid, All the listed answers would be correct. you can fuck a pornstar craigslist cars and trucks for sale by owner; kd linear actuator kdpt007 what is ait in the army; native american spiritual cleansing prayer simple spectrum coupon code; . What does the Commercial Driver Handbook say about how much space you should keep ahead of your truck? Have little braking power because they are small Typically depends on the axle count. In this order, the shutoff valves at the rear of front trailers, the rear of the last trailer and the converter dolly air tank drain valve should be? The DMV doubles triples practice test will examine your knowledge of pulling double/triple trailers, coupling and uncoupling, inspecting doubles and triples, and checking air brakes. These valves permit closing the air lines off when another trailer is not being towed. The lighter semitrailer should be in first position behind the tractor. Follow the procedures described later in this section. Do converter dollies have spring brakes? driven with care to avoid losing control, Make sure the spare tire is secured, if it has one, Make sure the converter dolly air tank drain valve is closed, Make sure safety chains are secured to the trailers, All of the above. True or False? D. Make sure the spare tire is secured, if it has one. What should you check for when inspecting the converter dolly?
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