REC II Exam Review - Unit 8

REC II Exam Review - Unit 8 Q. Where would you go to edit the description of a sensor? - ✔✔A. The online window or the configuration window. Q. What are Switch and Case function blocks used for? - ✔✔A. To easily creat ...

REC II Exam Review - Unit 8 Q. Where would you go to edit the description of a sensor? - ✔✔A. The online window or the configuration window. Q. What are Switch and Case function blocks used for? - ✔✔A. To easily create a software based state machine and they are a neater way of creating a series of conditional statements. Q. Competition templates start moving the robot as soon as _______. - ✔✔A. both the robot's transmitter and the controller are turned on. Q. _______ should be worn at all times while working with the vex kit components. - ✔✔A. Safety glasses. Q. For high torque applications, chain and sprockets are _______ reliable than belts. - ✔✔A. more Q. What are the sections of a competition template in easyC? - ✔✔A. Operator Control, Initialize, Autonomous. Q. What do you do to run only the operator control portion of a competition template? - ✔✔A. Put a Vex jumper clip into interrupt 6. Q. Keps nuts must contact the metal frame to work correctly and should not be tightened onto ______. - ✔✔A. Plastic bearings Q. Installing a ______ block after any code in a Case statement will cause the program to leave the Switch statement. - ✔✔A. Break Q. Chain and sprockets can span larger distances than gears. What are the resulting advantages? - ✔✔A. Reduced weight, increased efficiency, increased versatility. Q. What is a holonomic drive train? - ✔✔A. A drive train that can move in any direction while simultaneously controlling rotational speed in that direction. Q. ______ wheels reduce sideways friction on the wheels and allow the robot to skid steer more easily. - ✔✔A. Omni Q. Dialog boxes in easyC PRO are now more user friendly because they show the ______ and a description of the motor or sensor that is plugged into each port. - ✔✔A. port number Q. What does the "invert" check box do in the online window? - ✔✔A. Changes the direction of a motor within a group. Q. Why would you choose a belt over a chain? - ✔✔A. Belts produce smoother, quieter operation. Q. What should you do first if your partner becomes entangled in the robot? - ✔✔A. Turn the robot off. Q. What can you do to tighten a chain? - ✔✔A. Add a chain tensioner, remove links. Q. What new feature has been added to the configuration window? - ✔✔A. A description field for the description and notes about what is plugged into each port. Q. What is a disadvantage with a four wheel design with two driven wheels and two passive wheels? - ✔✔A. High turning forces are required to drag the passive wheels sideways when turning. Q. The ______ tells the compiler to include a particular file with your code. - ✔✔A. Preprocessor Directive (#include). Q. Define the following as dynamically stable, statically stable, balance while in motion, balance while stationary. {Running horse, dynamic balance, tripod, static balance}. - ✔✔A. Horse = dynamically stable; dynamic balance = balance while in motion; tripod = statically stable; static balance = balance while stationary. Q. Use a ______ gear combination to produce a slower output speed. - ✔✔A. small to large Q. The Vex controller sets all inputs and interrupts to ______ until the condition is read. - ✔✔A. 1 Q. What is the advantage of mecanum wheels versus omni wheels? - ✔✔A. Mecanum wheels have more traction. Q. A function name can be anything but should be relevant to the ______ of the function. - ✔✔A. purpose Q. What is the greatest challenge to designing a walking robot? - ✔✔A. Maintaining balance. Q. A 6 wheel drive robot design may be chosen over a 4 wheel drive design to increase the robot's ______. - ✔✔A. traction Q. To protect yourself while working with robots, you should: - ✔✔A. wear proper footwear, beware of pinch points, avoid wearing loose fitting clothes, remove dangling jewelry,k and keep hair tied back. Q. What keyboard symbols will the C programming language ignore? - ✔✔A. Spaces, line returns, any text on a single line following "//". Q. Jumper signals send as a digital ______. - ✔✔A. input Q. The increased friction and traction of tank treads makes ______ difficult. - ✔✔A. turning Q. For what purposes should spacers be used? - ✔✔A. In place of lock collars if possible to make assembly and disassembly easier, and to prevent gears from sliding on the shaft and getting out of alignment. Q. A(n) ______ connects two ends of chain together and a(n) ______ is used to add a half link to the length of the chain. ______ act as axels for the rollers of the chain and as rivet for the link plates, which maintain the spacing of the rollers. - ✔✔A. master link, offset link, pins Q. What are the advantages to using track in a robot design? - ✔✔A. Low ground pressure enables operation in a very soft terrain, tracked vehicles have the ability to cross wide gaps and crevasses, and a continuous contact surface prevents the robot from getting high centered. Q. How is a Switch statement different from other conditional statements? - ✔✔A. it contains only the name of a variable. Q. Before you can use a function in your program, you need to ______ it. - ✔✔A. declare Q. In any function, you should declare the variables ______ they are used in a statement. - ✔✔