D-2 Learning Task 1 Flashcards
(17 cards)
Which instrument uses a magnifying glass to read the angle measurements?
Open face transit
A transit or theodolite can be used for
a. Laying out angles only
b. Levelling only
c. Laying out angles horizontally and vertically only
d. Levelling and laying out angles horizontally and vertically
d. Levelling and laying out angles horizontally and vertically
How are the angle readings viewed when using an electronic theodolite?
On an LCD in degrees, minutes and seconds
How large are the graduations on the horizontal circle for a level transit?
The horizontal circle is graduated in 1 degree divisions
When an instrument does not have an optical plummet, what can be used in its place?
a. Compass
b. Magnifying glass
c. Plumb Bob
d. peep sight
Plumb bob
The horizontal eyepiece is used to:
a. Find true north
b. Take angular readings
c. Plumb the instrument
d. Reflect the light
b. Take angular readings
Which type of instrument may incorporate the use of a micro-dial knob?
a. Builder’s level
b. Transit level
c. Theodolite
d. Electronic theodolite
Theodolite
Vertical angles on an electronic theodolite may be read as:
Degrees, minutes, seconds or % of slope
When setting up an electronic theodolite on stable ground, it’s important to ensure that:
a. The operator uses the electronic level
b. The compensator is turned on
c. The vertical angle readings be turned off
d. You use the laser plummet
The compensator is turned on
How many seconds are in a circle?
1 296 000
What is the smallest increment of angular measure that can be read on a transit with a vernier?
20 seconds
What type of transit uses horizontal circle eyepiece?
a closed-faced transit and a theodolite (non-electronic)
Is a magnetic compass used when laying out a building
No
Which clamp is tightened to make the horizontal circle fixed to the ground?
Lower clamp
What is the term used to define the keys on the keyboard of an electronic theodolite that have more than one function?
Soft keys
When using an electronic theodolite, what is used to plumb the instrument over a point on the ground m?
Laser plummet
What is the term used to describe the angle formed between true north and magnetic north?
Magnetic declination
