PAF Aero Trade Past Paper 22-01-2024

Q11: Electric generator is a device that convert?

الیکٹرک جنریٹر ایک ایسا آلہ ہے جو بدلتا ہے۔

Mechanical energy int chemical energy

Thermal energy into electrical

Chemical energy into electrical

Heat energy into electrical

Q12: the triangle where all side is different in length is called -------triangle?

scalene

isosceles

acute angle

none

Q13: If 3×4=14; 5×6=33; 7×8=60, then 8×9=?

77

88

89

78

Q14: Adult means a peson who has attain the age of

18 years

15 years

21 years

Puberty

Q15: Identify the Sequence 6 , 10 , 14 , __

18

20

28

30

Explanation

This is an arithmetic sequence since there is a common difference between each term. In this case, adding $4$ to the previous term in the sequence gives the next term. In other words, $�_{�} = �_{1} + � (� - 1)$ .

Arithmetic Sequence: $� = 4$

This is the formula of an arithmetic sequence.

$�_{�} = �_{1} + � (� - 1)$

Substitute in the values of $�_{1} = 6$ and $� = 4$ .

$�_{�} = 6 + 4 (� - 1)$

Simplify each term.

Tap for more steps...

$�_{�} = 6 + 4 � - 4$

Subtract $4$ from $6$ .

$a n = 4 n + 2 " role="presentation" style="outline: 0px; display: inline-block; line-height: 0; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative;"> a_{n} = 4 n + 2$