Workshop Semester 4 July 2017

Workshop Calculation & Science - Semester IV (July 2017)

1. What is the correct value of π?
   a) 22/7 ✔
   b) 7/22
   c) 3.4
   d) 3/4
2. The outer diameter of a pipe is 100 cm, then the outer circumference will be:
   a) 62.8 m²
   b) 628.32 mm²
   c) 6283.2 m²
   d) 628.32 cm ✔
3. The pressure is given by:
   a) Force / Area ✔
   b) Area / Force
   c) Stress / Strain
   d) Strain / Stress
4. 2.5 tonnes can be expressed in kg as:
   a) 250 kg
   b) 25 kN
   c) 250 N
   d) 2500 kg ✔
5. Tanθ is equal to:
   a) Cosθ / Sinθ
   b) Opposite / Adjacent side ✔
   c) Adjacent side / Hypotenuse
   d) Opposite / Hypotenuse
6. What is the correct value of (22/7 × 350 × 2)?
   a) 1100
   b) 1200
   c) 2200 ✔
   d) 1800
7. The area of an equilateral triangle of side 8 mm is equal to:
   a) 27.7 mm² ✔
   b) 27.7 cm²
   c) 2.7 cm²
   d) 88 mm²
8. The area of a half circle with radius r is given by:
   a) πr² / 4
   b) πr² / 2 ✔
   c) πr² / 8
   d) πr²
9. 100°F can be written as:
   a) 100 F
   b) 212 F
   c) 36 F
   d) 222 F ✔
10. Mass / Volume refers to:
    a) Specific gravity
    b) Density ✔
    c) Young modulus
    d) Bulk modulus
11. What is the appropriate SI unit for distance?
    a) Centimeters
    b) Inches
    c) Meters ✔
    d) Kilometres
12. A homogeneous material is defined as being:
    a) An element
    b) Any material with uniform composition ✔
    c) Synonymous with solution
    d) More than one of these
13. One horse power is equal to:
    a) 475 W
    b) 1000 W
    c) 746 W ✔
    d) 876 W
14. The sum of the internal angle of a triangle is:
    a) 90°
    b) 180° ✔
    c) 360°
    d) 270°
15. 1 Gallon is equal to ______ litres:
    a) 3.785 ✔
    b) 3
    c) 4
    d) 5.5
16. Brass is an alloy of:
    a) Copper and Zinc ✔
    b) Bronze and Iron
    c) Iron and Steel
    d) Aluminium and Copper
17. 110°F can be written as ______ °C:
    a) 37
    b) 40
    c) 43.33 ✔
    d) 27
18. A cylinder (r = 50 cm, h = 250 cm) is melted to form a cube. Side of cube will be:
    a) 100 cm
    b) 125 cm ✔
    c) 150 cm
    d) 200 cm
19. If tanθ = 1, then cosθ will be:
    a) 1
    b) 0
    c) 1/2
    d) 1/√2 ✔
20. One sq.m is equal to ______ sq.cm:
    a) 100
    b) 1000
    c) 10000 ✔
    d) 10
21. The formula (Force × Displacement) / Time refers to:
    a) Power ✔
    b) Energy
    c) Time
    d) Work
22. Stored energy due to position is called:
    a) Potential energy ✔
    b) Kinetic energy
    c) Mechanical energy
    d) Work
23. The unit of volume is:
    a) Sq.m
    b) cu.m ✔
    c) cusec
    d) m
24. Length, Mass and Time are known as:
    a) Fundamental quantities ✔
    b) Derived quantities
    c) Similar units
    d) SI unit
25. Surface area of a cylinder is:
    a) πDH ✔
    b) πD
    c) πH
    d) DH