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Multiple Choice Questions* Question 1.*1.* (TCO 1) The controlled variable in a closed-loop system is the direction of a robot arm. Initially, it is at 50^o; then it is commanded to go to 25^o. What is the error when the arm position is at 15^o? (Points : 8) [INPUT]15^o [INPUT]25^o [INPUT]10^o [INPUT]50^o Question 2.*2.* (TCO 1) A motor was measured to rotate (unloaded) at 5000 rpm, with a 6-V input and 1000 rpm, with a 1.2-V input. What is the transfer function (steady state) for the unloaded motor in rpm/V? (Points : 8) [INPUT]8.33 [INPUT]83.3 [INPUT]833 [INPUT]63.3 Question 3.*3.* (TCO 1) In a certain system, an electrical heating element was found to increase the temperature of a piece of metal 5^o for each amp of current. The metal expands 0.003 in./deg, and pushes on a load sensor that outputs 1 V/0.004 in. of compression. What is the overall transfer function in V/amp. (Points : 8) [INPUT]3.75 [INPUT]6.33 [INPUT]833 [INPUT]63.3 Question 4.*4.* (TCO 1) Which of the following is a closed-loop system? (Points : 8) [INPUT]Turning on the lights in a house at 6 p.m., and turning them off at 6 a.m. [INPUT]Turning off the heater when the temperature reaches 68^o or above. [INPUT]Pumping water out of the ground. [INPUT]Setting the alarm to 8 a.m. Question 5.*5.* (TCO 1) If the gain in decibels of an amplifier is 76.9, what is the straight gain? (Points : 8) [INPUT]6998 [INPUT]6578 [INPUT]6745 [INPUT]6853 Question 6.*6.* (TCO 2) Find the current in a ground loop that is 180 m long, has a wire resistance of 0.07 ohms/m, and has a difference of 4 V between grounds?(Points : 8) [INPUT]0.5189 [INPUT]0.3234 [INPUT]0.3175 [INPUT]0.5609

  • Multiple Choice Questions*

Question 1.*1.* (TCO 1) The controlled variable in a closed-loop system is the direction of a robot arm. Initially, it is at 50^o; then it is commanded to go to 25^o. What is the error when the arm position is at 15^o? (Points : 8)

[INPUT]15^o [INPUT]25^o [INPUT]10^o [INPUT]50^o

Question 2.*2.* (TCO 1) A motor was measured to rotate (unloaded) at 5000 rpm, with a 6-V input and 1000 rpm, with a 1.2-V input. What is the transfer function (steady state) for the unloaded motor in rpm/V? (Points : 8)

[INPUT]8.33 [INPUT]83.3 [INPUT]833 [INPUT]63.3

Question 3.*3.* (TCO 1) In a certain system, an electrical heating element was found to increase the temperature of a piece of metal 5^o for each amp of current. The metal expands 0.003 in./deg, and pushes on a load sensor that outputs 1 V/0.004 in. of compression. What is the overall transfer function in V/amp. (Points : 8)

[INPUT]3.75 [INPUT]6.33 [INPUT]833 [INPUT]63.3

Question 4.*4.* (TCO 1) Which of the following is a closed-loop system? (Points : 8)

[INPUT]Turning on the lights in a house at 6 p.m., and turning them off at 6 a.m. [INPUT]Turning off the heater when the temperature reaches 68^o or above. [INPUT]Pumping water out of the ground. [INPUT]Setting the alarm to 8 a.m.

Question 5.*5.* (TCO 1) If the gain in decibels of an amplifier is 76.9, what is the straight gain? (Points : 8)

[INPUT]6998 [INPUT]6578 [INPUT]6745 [INPUT]6853

Question 6.*6.* (TCO 2) Find the current in a ground loop that is 180 m long, has a wire resistance of 0.07 ohms/m, and has a difference of 4 V between grounds?(Points : 8)

[INPUT]0.5189 [INPUT]0.3234 [INPUT]0.3175 [INPUT]0.5609

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