FEBRUARY 2016

WORKSHOP CALCULATION & SCIENCE

SEMESTER - II

1. Add the expression:

(3x+3y);(5x-4z);(9z-3y)

a.  8x+5z
b.  -8x+5z
c.  8x-5z
d.  -8x-5z

Answer:- a.  8x+5z

2. Multiply: (2a+b) (a+2b)

a.  2a²-5ab-2b²
b.  2a²-5ab+2b²
c.  2a²+5ab+2b²
d.  2a²+5ab-2b²

Answer:- c. 2a²+5ab+2b²

3. Simplify the expression:

5x+20/7x+28 is

a.  5/7

b.   -5/7

c.  7/5

d.  -7/5

Answer:- a.  5/7

4. The formula for (a+b)² = .............

a.    a² + b² - 2ab

b.    a²-b²-2ab

c.    a² + b² + 2ab

d.    a² - b² + 2ab

Answer:- c.    a² + b² + 2ab

5. Solve x, y; x+y=18and x-y=2.

 a.  10,8
b.  -10,8
c.  10, -8
d.  -10. -8

Answer:- a.  10,8

6. Kelvin is the unit of ..............
a.   power
b.   heat
c.   temperature
d.   energy

Answer:- c.   temperature

7. One calorie = ............

a.  9.8 J

b.  5.2J

c.  4.2J
d.  0.4536J

Answer:- c.  4.2J

8. Which instrument is used

to measure the

temperature above

300°C?

a.  Gas thermometer
b.  Alcohol thermometer
c.  Mercury thermometer
d.  Pyrometer

Answer:- d.  Pyrometer

9. Transmission of heat energy

by contact is

known as ...............

a.  radiation
b.  convection
c.  conduction
d.  evaporation

Answer:- c.  conduction

10. Boiling point of water in Reaumer scale

is ...............

a.  80°R
b.  100°R
c.  212°R
d.  373°R

Answer:- a.  80°R

11. If the circumference of a circle is 44cm. Find

its area (Take π = 22/7)

a.  134 cm²
b.  144 cm²
c.  154 cm²
d.  164 cm²

Answer:- c.  154 cm²

12. Find the area of a right angled triangle with
base 20 cm and height 8 cm?

a.  90 cm²
b.  80 cm²
c.  70 cm²
d.  60 cm²

Answer:- b.  80 cm²

13. Calculate the volume of cuboid box whose

length is 10 metre, breadth is 12 metre and

height is 5 metre.

a.  300 m³

b.  400 m³

c.  500 m³

d.  600 m³

Answer:- d.  600 m³

14. The formula for total surface area of sphere
is.......

a.  πr²

b.  2 πr²

c.  3πr²

d.  4πr²

Answer:- d.  4πr²

15. Calculate the volume of a cylinder whose
base area is 120 cm2 and height of the
cylinder is 16cm.
a.  1600 cm³

b.  1920 cm³
c.  2240 cm³
d.  2420 cm³

Answer:- b.  1920 cm³

16. Unit of resistance .............

a.  ampere

b.  volt

c.  ohm

d.  mho

Answer:- c.  ohm

17. Which one is a conductor?

a.  Copper

b.  Porcelain

c.  Wood

d.  Rubber

Answer:- a.  Copper

18. Which type of current is produced

      from a cell
or a battery?

a.  Static current

b.  Direct Current (DC)

c.  Alternating Current (AC)

d.  AC and DC

Answer:- b.  Direct Current (DC)

19. To measure the electric power

which of the following meter is used?
a.   Ammeter
b.   Wattmeter
c.   Voltmeter
d.   Ohm meter

Answer:- b.   Wattmeter

20. In a parallel connection circuit

the voltage across each resistance is.......

a.  different
b.  same
c.  low
d.  high

Answer:- b.  same

21. 1/3π = ..................

a.  30°
b.  40°
c.  45°
d.  60°

Answer:- d.  60°

22. If coseƟ = 1/√2. Find the value of tanƟ

a.  1

b.  1/2

c.  √3/2

d.  √3

Answer:- a.  1

23. Find the value of sin 30°.

a.  1/√2

b.  1/2

c.  √3/2

d.  1

Answer:- b.  1/2

24.  An example of 2nd order lever is ....
a.   common balance
b.   cutting plier
c.   wheel barrow

d.   scissor

Answer:- c.   wheel barrow

25. The ratio between load and effort is called .....

a.  mechanical advantage

b.  velocity ratio

c.  efficiency

d.  force

Answer:- a.  mechanical advantage