1. The document contains a 12 question multiple choice assessment on the subject of forest mensuration. The questions cover topics like dimensions of a chatta, formulas for calculating tree height and volume, measurement of diameter at breast height, estimating tree height using single pole method, and definitions of terms like taper. 2. The assessment tests knowledge of technical terms, formulas, and methods used for measuring forest resources and trees. Multiple choice questions require selecting the best answer from among options given on topics of standard measurement techniques. 3. Questions cover both theoretical concepts like formulas for volume and practical field techniques like using a clinometer to estimate height. Scoring well requires understanding principles and applications of forest mensuration.

1. Tribhuvan University, Institute of Forestry Pokhara
Internal Assessment
Subject: Forest Mensuration-I Time:20minutes Full Marks: 12
Choose the best answer among the given alternatives.
1. Which one is the correct dimension of one full chatta?
(a) 5ft x 5ft x 20ft (b) 5m x5m x 20m (c) 5ft x 5ft x 10ft (d) 5m x 5m x 10m
2. Which formula is more accurate?
(a) Smalian’s (b) Newton (c) Hubers (d) Quarter girth
3. What is the standard height for DBH measurement in Nepal?
(a) 1.3ft (b) 1.37ft (c) 1.3m (d) 1.37m
4. The volume of the log is 0.53 m3
over bark and 0.47m3
under bark. Calculate bark %.
(a) 13.23 % (b) 12.32 % (c) 11.32 % (d) 10. 23%
5. The height of the tree leaning toward the observer is ……………estimated.
(a) Over (b) under (c) normal (d) exact
6. Calculate the height of the given tree
(a) 60ft (b) 76 ft (c) 80ft (d) 89ft

2. 7. Which method this? (see figure below)
(a) Shadow method (b) Ocular estimation (c) Single pole method (d) None
8. Calculate the height of the tree from above figure, if a=1m, c=10m and b= 2m
(a) 16m (b) 18m (c) 20m (d) 22m
9. Which formula is used to calculate the height of the tree in this case?
(a) CB=AC Cos β ( tanα + tan β) (b) CB=AC Cos β ( tanα - tan β)
© CB=AC Cosα ( tan β + tanα ) (d) © CB=AC Cos β ( tan β - tanα )
10. Calculate the volume of the tree by Hubers formula.
(a) 0.2.5 cm3
(b) 2.5m3
(c) 2.5 m3
(d) 0.25m3
11. Taper is
(a) Decrease in diameter of a tree from the base to upward.
(b) Increase in diameter of a tree from the base to upward.
(c) Decreasing the diameter of the tree in the middle.
(d) None of the above.
12. Which of the following is used to measure the height?
(a) Abney’s level (b) Clinometer (c) Vertex (d) all
The End