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ASSIGNMENT QUESTIONS - 14069_740
ASSIGNMENT QUESTIONS - 14069_742

Engineering Aid 3 - Beginning Structural engineering guide book
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10-25. Which of the following defects is most likely to cause a compass to read incorrectly at both ends of its  needle? 1. A bent pivot 2. A warped compass card 3. A bent needle 4. A blunt pivot point 10-26. A compass needle that is weak magnetically should be strengthened by which of the following  methods? 1. Placing the magnet in an inductive  field 2. Drawing  the  needle  over  a magnet 3. Placing the magnet in a shielded  box 4. Heating  the  needle  with  a lighted match 10-27. A compass needle acts sluggishly although it has retained its full magnetism. Which  of  the  following methods should you use to make the needle  act  smartly? 1. Sharpen  its  points 2. Sharpen the point on the pivot 3. Reshape it with a special tool 4. Demagnetize  it 10-28. In setting up and leveling a transit,    you have followed all of the  correct  procedures. You discover, however, that the plumb bob is still not quite directly over the station point. Which of the following actions should you take next? 1. Loosen two adjacent leveling screws  to  free  the  shifting plate and shift the transit head laterally 2. Replace the plumb bob 3. Adjust the tripod legs 4. Re-level the instrument 10-29. Before taking up a transit, which of the following actions should you take concerning the telescope and  the  vertical  motion  clamp? 1. Bring the telescope perpendicular to the vertical axis and firmly tighten the clamp 2. Point the telescope vertically upward and firmly tighten the clamp 3. Point the telescope vertically upward and loosen the clamp 4. Point the telescope vertically upward and lightly tighten the clamp 10-30. In which of the following ways are the  horizontal  limbs  of  transits numbered? 1. 0°-360°  clockwise 2. 0°-360°  clockwise,  also  0°-90° by  quadrants 3. 0°-360°  clockwise,  also 360°-0° counterclockwise 4. Each of the above 10-31. When you are turning a 40° horizontal angle by transit, what part will normally point to the number  of  degrees  turned? 1. Zero  on  the  A-vernier 2. Zero  on  the  B-vernier 3. 0°-360°  graduation  on  the horizontal limb 4. 40°-320° graduation on the horizontal limb 10-32. Releasing the upper motion of a transit enables you to take which of the following actions? 1. Hold the telescope in place 2. Rotate and train the telescope 3. Hold the horizontal limb in place 4. Rotate and align the horizontal limb 10-33. Which of the following steps should you normally take when turning a 20°   horizontal angle from a reference line with a transit? 1. Clamp the lower motion to hold the telescope in place after training it on the reference line 2. Release the lower motion to rotate  the  telescope  20° 3. Align the 0° -360°  graduation on the horizontal limb with the zero on the A-vernier 4. Align the 0° -360°  graduation on the horizontal limb with the zero on the B-vernier 10-34. To fix the exact position of the horizontal limb with respect to the  A-vernier,  what  transit  screw, if any, should you use? 1. Telescope clamp screw 2. Upper motion tangent screw 3. Lower motion tangent screw 4. None 69







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