Hypovolemic shock is the most common type. READ MORE MCQ OF: ♦ In di an Hi st ory. A block-brake shown below has a face width of 300 mm and a mean coefficient of friction of 0.25. Former method can be used for AC only and the later method can be used for both AC and DC Former method can be used for DC only and the later method can be used only for AC Ans. 41. The power source which carries the pedal force applied by the driver on brake pedal to the final brake drum or brake disc in order to de accelerate or stop the vehicle the braking systems are of 6 types-. PART 4: MCQ from Number 151 - 200 Answer key . Electromagnetic brakes operate electrically but transmit torque mechanically. However, single-phase AC or DC motors have also been used, but infrequently. Diameter of the disk is 1m and time taken to come to stop the disk by brake is 1.6sec.Square of radius of gyration is 0.2. Tonnes Show Explanation Ques 33. 2) What is the expansion of NVH, an abbreviation commonly used in automobile dealings? (d) nearly constant speed. This was designed as an alternative to the conventional braking system of applying friction over the wheels to slow them. It is driven at 1200 rpm. In electrical brakes an electromagnet is used to actuate a cam to expand the brake shoes. The problem was that batteries used to be incredibly heavy. Brakes are used to reduce or cease the speed of motors. 05․. _____ is one of the most common reasons vehicles flip over. Electric braking is a method of bringing the rotating motor to rest. 1-Leaf springs absorb shocks by (A) bending (B) twisting (C) compression (D) tension (Ans: A) 2-Coil springs absorb shocks by (A) bending (B) twisting (C) compression (D) tension (Ans: C) 3-The following is a type of leaf springs These short solved questions or quizzes are provided by Gkseries. Which of the following is (are) an electrical brake? The disc brake is a mechanism for slowing or stopping the rotation of a wheel from its motion. (a) low initial as well as maintenance cost. An automobile brake is only used to reduce the speed or bring the vehicle to hault. They have flexible control characteristics. PART 1: MCQ from Number 1 - 50 Answer key: PART 1. 1. Piezoelectric ceramics are smart materials commonly used in mechatronic devices and smart systems. 1918 Malcolm Lougheed developed a hydraulic brake system. Thus left the side of the servo cylinder piston is exposed to atmosphere and vacuum acts on the right side, which causes the braking effort.. Braking takes place by suction from the engine inlet manifold. 12 x 2 Pair of 12″ x 2 " TruRyde electric brake assemblies with parts 5 Hole Mounting. Automobile Quiz Questions Answers Part 1. The delay may be longer if the motor is huge in size and if it is running at high speed. Due to energy capacity and weight, mostly the lithium cells are chosen today's EV industry. Hydraulic actuators operate by the use of a fluid-filled cylinder with a piston suspended at the center. This is the driving force that will open the doors to great changes for braking systems and that makes one say that the "brake of the future" is about to see the light. (D) Rotor and electric. It is also required to be consulted by the Government in matters relating to the appointment, transfer, promotion and disciplinary matters. Air Brake: This type of air brake system is commonly used in heavy vehicles such as buses, trucks, etc.. Brake capacity depends upon (A) The unit pressure between braking surfaces (B) The contacting area of braking surface (C) The coefficient of friction (D) All of the above 9. Multiple Choice Questions (MCQ) with Answers on Suspension system. Vacuum braking system. The clearance between the valve and rocker arm is measured by using: (A) inside micrometer (B) feeler gauge (C) wire gauge (D) outside micrometer. Which of the clutch arrangement is used in synchromesh gearbox? a. e-communication b. e- governance c. e- record d. e-commerce. In Texas, all CDL applicants must pass the Special Requirements Test before they are permitted to take any other CDL test. (b) high starting torque. In electric braking negligible amount of heat is generated whereas in mechanical braking enormous heat is produced at brake shoes which leads to failure of brakes. PHEVs have larger battery packs than HEVs, making it possible to drive using only electric power (about 10 to 40 miles in current models). An ELECTRIC DRIVE is defined as an electromechanical device . UPSC is India's premier central recruiting agency for central Government public servants. The capacity of a crane is expressed in terms of Span Type of drives Tonnes None of the above Answer 3. 6 000 lbs. Generally, three-phase AC motors that deliver higher torque (ranging up to >80,000 NM) are deployed. These electrical signals can be input to feedback systems to stimulate movements in actuators, to trigger alarms or to switch . Air Brake: This type of air brake system is commonly used in heavy vehicles such as buses, trucks, etc.. Mostly used for passenger duties despite the M=mixed classification. 53 environment such as global warming and acid rains current; formation of multiple images; structure of flame, etc. The battery packs used in electric vehicles are consisted from hundreds of battery cells. The principal object of a brake is to balance the energy give energy absorb energy none of the above Answer 2. 1. 119. Electrical Drive MCQ. Thus left the side of the servo cylinder piston is exposed to atmosphere and vacuum acts on the right side, which causes the braking effort.. Braking takes place by suction from the engine inlet manifold. The electric motor in a hybrid car can also act as : answer choices . Shoes press against a rotating surface. a) Yes c) band and block brake. During your e-learning supplied by MOT Online Learning, recommendations and suggestions are made but the definitive source of information about what constitutes a Pass, Advisory, Minor, Major or Dangerous should always be the MOT Tester Manual and associated Special Notices. <a title="Clutch MCQ" class . Automatic transmissions use to _____ transmit power from engine to transmission. 21. Mechanical braking system. After . In Figure 1, the brake shoes are held in the 'on' position against a flat pulley by a substantial spring. Centrifugal clutch Single plate clutch Dog clutch Fluid clutch 22. wet . The characteristics of the drive for crane hoisting and lowering is Smooth Movement Precise control Fast speed control All of the above Show Explanation Ques 32. Multiple Choice Questions: 1. The things Carried out by means of electronic data interchange, and other means of electronic communication is commonly referred to as. 1. PART 2: MCQ from Number 51 - 100 Answer key: PART 2. Electric traction was introduced on Indian Railways in the year 1925 on 1.5 KV DC and the first electric train ran between Bombays Victoria Terminus and Kurla along the Harbour Line on February 3rd 1925. electric motor, which uses energy stored in a battery. A train has a mass of 500 tonne. A disc brake is normally made of cast iron, but in some cases, it is also made of composites such as carbon-carbon or ceramic -matrix composites. In turn, this will reduce the braking distance by a few meters. Reduces the stopping distance B. Minimizes the brake fade C. Maintains directional control during braking by preventing the wheels from locking D. Prevents nose dives during braking and thereby postpones locking of the wheels Answer & Solution Discuss in Board Save for Later 2. WORKING OF DRUM BRAKES Drum brakes work on the same principle as the disc brakes. In this also when the brake pedal is pressed, air to atmosphere enters the compressor . Answer: Noise, Vibration and Harshness. The test is based on the information found in Section 14 of the Texas CDL Handbook.The Special Requirements Test consists of 20 multiple-choice questions, and you'll need to correctly answer at least 16 questions (80%) to pass. Calculate the torque capacity of the brake. Magnetic field - Wikipedia This article lists 100 DC Motor MCQs for engineering students. The brakes commonly used in railway trains is. Commonly, hydraulic actuators produce linear movements, and a spring is attached to one end as a part of the return motion. So a mechanical braking is required additionally. Hydraulic braking system. A) run with excessive vibrations. Below are the most common actuators according to energy source: Hydraulic Actuators. Top 10 Tools Or Softwares For Embedded Engineers, Electronics Tools Why ECU Is Used In Cars, Working Of Electronic Control Unit, Benefits Electric Vehicle Quiz 172 Created on July 29, 2021 Electric Vehicle These quiz questions as most commonly asked in online tests. Connecting rheostat in series C. Applying variable voltage by means of silicon controlled rectifier D. Applying variable voltage by means of variable auto-transformer E. All of the above methods View Answer Your Comments 10. The power source which carries the pedal force applied by the driver on brake pedal to the final brake drum or brake disc in order to de accelerate or stop the vehicle the braking systems are of 6 types-. The advantages of a group driver electric drive are HIgh efficiency Low Noise Constant speed All of the above Show Explanation Ques 6. cooling fan. In electrical brakes an electromagnet is used to actuate a cam to expand the brake shoes. Since 2001 the investment in R&D activities for the electric braking systems or brake-by-wire, as the insiders define it, have been growing. Comes with mounting bolts nuts and lock washers Works with 5 200 lbs. Homed at Kalyan. Answer: (b) high starting torque. A strong breaking torque is achieved by maintaining the supply voltage to the armature reversed. 1-5 They can be used to sense changes in pressure and strain in the environment and can generate electrical responses. Types of Brakes: DISC BRAKE. But there will be a delay before it stops. Manufacturers: English Electric / Vulcan Foundry Electric brakes are not used in automobiles as service brakes. Air or pneumatic braking system. Question 1 ___________ is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. If the flux per pole is 0.022 Wb, then the generated emf is The authentication to be affected by use of asymmetric crypto system and hash function is known as . and 7 000 lbs. This is why they used to be referred to as Electro Mechanical clutches and brakes. These short objective type questions with answers are very important for Board exams as well as competitive exams. Answers are available at the bottom of the article. 4.2 Electric Drive with DC Machines For some reasons, today the term DC drive is not clear. 250+ TOP MCQs on Brakes and Dynamometers and Answers. The parking brakes employed in vehicles are operated; Which of the following statements are true for electric field lines? Damper in an automobile is used to a) Absorb the energy b) Dissipate the energy c) Release the energy d) Increase the energy Q2. b) band brake. This is linked to the wheel and/or the axle. These short solved questions or quizzes are provided by Gkseries. Mechanical braking system. (c) possibility of speed control. Test Set - 3 - Electrical Machines - The test carries 40 questions on topics such as Series, Compound - D.C Motor, Speed Control of D.C Motor, Permanent Magnet & Brushless, Starters used in D.C Motor, Rotating Magnetic Field in 3 phase induction motor etc. PART 3: MCQ from Number 101 - 150 Answer key: PART 3. Electric motors used in electric vehicle should have important attributes like simple design, high Electric brakes are not used in automobiles as service brakes. The total distance of 9.5 miles and that was flagged off by the Governor of Bombay "Sir Leslie Orme Wilson". B) run at 2/3 of synchronous speed. Disadvantages, Limitations of Electrical Braking: Electric braking can not be used for hold the machine after coming to the rest. d) internal expanding brake. and the specialty and properties of these motors are different from each other, hence this braking methods also differs from each other.But we can divide braking in to three parts mainly, which are . reducing the amount of friction necessary to slow a car. 3) What was the rally with which the World Rally Championship opened? 5. When flow of current is stopped the cam and brake shoes return to their original position and brakes are disengaged. The function of anti-lock brake system (ABS) is that is A. The electromagnet is energized by the current flowing from the battery. Machine Dynamics Multiple Choice Questions on "Brakes and Dynamometers". In some situations, the electronic activation of EBS can be decisive. There are many types of electromagnetic brakes (tooth, multiple disc, hysteresis, magnetic particle). The disadvantages of group drive electric machine is/are Low efficiency Low overload capacity Can't be used for constant operation All of the above Show Explanation Ques 7. 118. For DC/AC Circuits courses requiring a comprehensive, classroom tested text with an emphasis on troubleshooting and the . Angioedema of the face such that the boy cannot open his eyes. MCQs 8: A 4 pole, lap wound d.c. generators has 40 coils with 8 turns per coils. PHEV batteries can be charged several ways: by an outside electric power source, Q: DC Motor Braking MCQ Question 1 Detailed Solution Download Solution PDF Plugging: In this method, the motor is reconnected to the supply in such a way that it has to develop torque in opposite direction to the movement of the rotor, it can be done by reversing the connections of the armature Generally which brakes are on the front wheels Generally which brakes are on the front wheels The brakes commonly used in railway trains is The brakes commonly used in railway trains is Skids occur when the brakes are applied so hard that the front or rear wheels lose traction The function of master cylinder in hydraulic brakes is to Al-Ko Dexter Lippert and Quality Trailer Axles Geniune TruRyde Brakes TruRyde parts are manufactured to automotive standard in ISO/TS-16949 registered factory. DC series motors are very suitable for heavy duty applications such as electric railways, rolling mills because of. inductors employed to limit starting current of ac motors. Electrical motors are electrical energy conversion devices that are used mostly in all electrical systems. 3. 120. The brake commonly used in motor cars is Q: When brakes are applied to all the four wheels of a moving car, the distance travelled by the car before it is brought to rest, will be Q: Which of the following is an absorption type dynamometer ? All the DC Motor Questions & Answers given below includes solution and link wherever possible to the relevant topic. Explains processes and phenomena in order to relate to science behind the phenomena/processes . ⇒ Click Here For More Automobile MCQ. EBS (electronic braking system) and its components basically reduce the buildup times and response in brake cylinders. reclaiming heat from the brakes and using . Electric engines that use much more gentle and efficient magnetic fields. Introduction. The shoes are pulled away from the drum by the springs when the brakes are released. In case of locomotives the tractive power is provided by (a) single cylinder double acting steam engine (b) double cylinder, single acting steam engine (c) double cylinder, double acting steam engine (d) single stage steam turbine Ans: c 15. Damper is also known as a) Shock absorber b) Torsion bar c) Spring d) Radius rod Q3. Most commonly used electrical motor for speed control applications are the following: DC Machines . A gear used in the tractor hydraulic system normally is; In forced circulation system, a thermostat valve is placed at; In force-feed cooling system thermostat valve begins to open at; In tractor engines, a commonly used thermostat valve is; Thermostat valve is used in; A pump used in the tractor hydraulic is; The pump used in most of the . Dynamic braking C. Regenerative braking D. None of the above View Answer Question 2 Electric engines are superior in almost every way: They are lighter, smaller, cheaper, require no maintenance, are four times more efficient, cause no exhaust, and can run on renewable electricity. In case one phase of a three-phase synchronous motor has short-circuited the motor will. Answer. Speed control of a universal motor is achieved by A. Varying field flux with tapped field windings B. Electric drives are used in boats, 1. traction systems, 2. lifts, cranes, electric car, etc. Q. d. 2. generator. Air or pneumatic braking system. Automobile Engineering MCQ question is the important chapter for a Mechanical Engineering and GATE students. The below list provides all the multiple-choice questions related to the synchronous motors. When the load is removed from the DC motor or when the supply is disconnected, the motor should come to rest. The damper fluid leakage typically occur from a) Upper damper mounting b) Bottom of damper A. Countercurrent Braking B. In this system that surface is called a drum. MOTORS COMMONLY USED IN EV's Different types of motor exhibit different characteristics, which makes it important to evaluate motors on some basic parameters for choosing a particular type of motor for an electric vehicle. 9. 1. We know that there are various types of motors available (DC motors, induction motors, synchronous motors, single phase motors etc.) Gradual engagement Maximum Inertia Smallest possible size Good heat dissipation 23. Q. Regenerative braking involves : answer choices . Usually batteries are used in the ups system; Which of the following vehicles produces zero emissions mcq _____ is one of the most common reasons vehicles flip over. We have created this list based on previous years' papers. 30 seconds . Three series-parallel combinations possible, and weak field operation. Travelling cranes commonly use this form of solenoid braking on all directional movements. The traveling speed of the crane varies from Learn Automobile Engineering MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. An application of power to the induction motor also energizes the solenoid, which releases the brake and allows the pulley to rotate. Ans. Electrical brake : Electric brakes are used in electrically driven utilities and machines in industries and mainly in electric automotives such as electric locos. Important and Frequently Asked in Competitive Exams . The device used to reduce the exhaust noise is known as: (A) exhaust manifold (B) muffler (C) tail pipe (D) exhaust pipe.

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