1. Where would you disconnect a chain? # a) At a bolted joint. b) At a spring clip joint. c) At an riveted joint. 2. How many strokes per minute should be used with a hacksaw? # a) 30 b) 55 c) 60 3. Unused holes in an electrical multi-pin connector should be a) fitted with pins # b) fitted with blanks c) left open 4. How many times can a locking plate be used? a) once‚ then discarded # b) indefinitely
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II. MECHANICAL STRUCTURE Both being internal combustion type diesel and gasoline engines can be considered as similar. Simply‚ both engines converts chemical energy into mechanical one by burning fuel. In combustion engines the combustion (explosion of fuel) occurs at combustion chamber with ‚ generally‚ help of oxidizer (air‚ another fluid‚ etc.). The output‚ high heat and pressure of the burning process is transfered to other components of the engines which expose pressure as a mechanical energy
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mecatronics‚ electric vehicles‚ high speed transportation etc. SYNCHRONOUS RELUCTANCE MOTORS * A reluctance motor is a type of synchronous electric motor which induces non-permanent magnetic poles on the ferromagnetic rotor. * Torque is generated through the phenomenon of magnetic reluctance. Operating principle * Whenever a piece of ferromagnetic material is located in a magnetic field a force is exerted upon the material tending to bring it into the position of densest
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sent to the motor. Since the shaft of the motor moves only the number of degrees that it was designed for when each pulse is delivered‚ you can control the pulses that are sent and control the positioning and speed. The rotor of the motor produces torque from the interaction between the magnetic field in the stator and rotor. The strength of the magnetic fields is proportional to the amount of current sent to the stator and the number of turns in the windings. The stepper motor uses the theory of
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1 Balancing of Engine Parts Definition:Engine balance refers to those factors in the design‚ production‚ tuning‚ maintenance and the operation of an engine that benefit from being balanced. Explanation:Piston engine balancing is a complicated subject that covers many areas in the design‚ production‚ tuning and operation. The engine considered to be well balanced in a particular usage may produce unacceptable level of vibration in another usage for the difference in driven mass and mounting
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The 1969 Yenko bears the legendary 427 big block that pushes 430 horse‚ 450lb-ft of torque‚ and the ZL-1‚ which sports the first 427 aluminum block made by Chevy. This monster of an engine pushed out close to 500 horse‚ and 475lb-ft of torque. In the early 80’s both car companies went through some dramatic changes. For instance‚ the thunderous V8’s were replaced with six cylinder engines‚ and Mustang even had
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Pearls Before Swine Where you are can explain who you are. Why you are in a particular place and how you got there tell an outside observer about your decisions and the inferred motives behind those decisions. In “Ex-Basketball Player‚” John Updike introduces a character whose surroundings emulate his success in life: Flick Webb. Flick’s momentary success did not remain later in his life. Because setting partially defines a person‚ Updike uses it‚ along with tone and irony to remind readers that
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ABSTRACT Thrust & Torque Calculations for MOV’s using Microsoft Office Products Prepared by Michael C. Richard Teledyne Brown Engineering Desktop computing using Microsoft Office products have changed the way that engineering calculations are performed. But‚ is the change for the better or the worse? Engineering Managers are faced with the task of “computerizing” engineering calculations all the time. This paper presents some guidance on how to choose the method that best suits your calculation needs
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at synchronous speed. • Stator flux induces an emf into the rotor bars. • Rotor current flows in the rotor bars producing an opposing magnetic flux to the stator. • Rotor flux reacts with the stator flux which in turn causes motor rotation (torque). • Torque is maintained because the rotor runs at a slower speed than the RMF. This is referred to as the slip speed usually around 4%. In other words the stator is dragging the rotor along in a rotational force. The stator core is laminated to reduce
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according to the different rotors: the squirrel-cage induction motors and the wound induction motors. The squirrel-cage induction motors are commonly used when the load requires little starting torque‚ such as lifts and fans‚ while the wound induction motors are necessary used when the load requires high starting torque. The induction motor used in this experiment is a there-phase squirrel-cage induction motor. 2.2 Power converter Since it is necessary to adjust the voltage magnitude according to
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