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These 10 free 2AMAR questions are organized by exam domain, so you can see how each part of the Level 2: Advanced Mechatronics Applied Robotics blueprint is tested. Reveal the answer and explanation under each question.
A technician is replacing a pneumatic gripper whose jaws require air pressure to hold a suspended casting. Electrical and compressed-air supplies have been locked out, but a check valve retains pressure at the gripper. The casting has no mechanical support. Which action prevents it from falling when the retained pressure is released?
Correct answer: D - Secure the casting with the specified mechanical support.
An independent gauge checks a robot's return to the same commanded position under unchanged conditions. The measured X errors are +1.28, +1.31, +1.29, +1.32, and +1.30 mm; the placement tolerance is ±0.20 mm. Which finding should be recorded?
Correct answer: B - A consistent target offset with little variation between returns.
For a proposed loaded configuration, a gripper weighs 1.6 kg with its center of gravity 70 mm from the flange, and the workpiece weighs 2.4 kg with its center of gravity 195 mm from the flange. Both offsets lie on the same positive tool axis. The manufacturer's load envelope for this configuration permits at most 5.0 kg and a combined center-of-gravity offset of 120 mm. Which assessment is correct?
Correct answer: A - 4.0 kg at 145 mm; the offset exceeds the permitted load envelope.
After a pallet fixture is removed and refitted, targets at all four corners of its rectangular pocket grid miss by the same distance in the same cell direction. The same tool still reaches a separate fixed checking station accurately at several wrist orientations. Every pallet target uses PalletFrame. Which correction best addresses the shared error?
Correct answer: C - Re-establish PalletFrame from the pallet's datum features.
A probe must withdraw straight out of a tilted inspection sleeve without changing its orientation. The active tool's Z axis is aligned with the sleeve, with +Z pointing farther inside. World Z is vertical and is not parallel to the sleeve. The withdrawal path has been checked for clearance. Select the jogging command that withdraws the probe along that path.
Correct answer: D - Tool frame, negative Z translation.
A replacement 24 V part sensor lights when a workpiece arrives, but the robot input stays FALSE. The input circuit has a fixed load from its signal terminal to 0 V. The old sensor supplied current to that load; the replacement switches its output toward 0 V. Supply voltage and the common connection are correct. Which change restores the intended interface?
Correct answer: A - Use a PNP sensor that sources current when a workpiece is detected.
An entirely offline pick-and-place simulation has no connection to real I/O. It must latch an acquisition fault and inhibit transfer if GripOK stays FALSE for 1.2 seconds after the grip command. Every test currently succeeds, including one with the simulated valve disabled. The tester discovers that GripOK is forced TRUE. Which test supplies the missing evidence?
Correct answer: C - Remove forcing; hold GripOK FALSE and verify fault latching and transfer inhibition at timeout.
A controller repeats a clamp request if its completion message is lost. The macro toggles ClampCmd on each call: TRUE commands clamping, and FALSE commands release. An initial request clamps the part, but a repeated request releases it. Repeated requests must leave the part held, without commanding release. Which revision meets that requirement?
Correct answer: B - Set ClampCmd TRUE each call; acknowledge after confirming clamping.
An operator must position a robot-held panel by grasping a designated handle and physically directing the robot into an assembly fixture. The robot carries the weight; the operator chooses the path during this portion of the task. Which operating arrangement matches that interaction?
Correct answer: D - Hand-guided control that lets the operator direct movement through the designated handle.
During a layout change, a fixed tote wall is placed behind a cobot's transfer path. At one reachable point, a person's forearm could now be compressed between the tool and that wall. The previous contact assessment assumed the forearm could move away freely. Which change in the assessment is required?
Correct answer: C - Evaluate quasi-static contact, including the force and pressure at the trapped forearm.
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