More Classes

5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject

ECAT Mathematics Chapter 23 Pre Engineering Online Test MCQs With Answers

Question # 1

The vector i = [1,0] is called unit vector along:

Choose an answer

x-axis

y - axis

z- axis

Botha a and y-axis

Skip

Question # 2

If a,b = 0 then

Choose an answer

a |b

a||b

a = b

None

Skip

Question # 3

If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]=

Choose an answer

√7

√41

√19

√(2&7)

Skip

Question # 4

The vector k = [0,0,1] is called unit vector along:

Choose an answer

x -axis

y - axis

z- axis

None of these

Skip

Question # 5

If a≠ , b≠ 0 and|a=b|=|a-b|,then vectors a and b are:

Choose an answer

Parallel to each other

Perpendicular to each other

Inclined at 60^o

neither parallel nor perpendicular

Skip

Question # 6

If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =

Choose an answer

-i -15j

i-15j

i-3j

None of these

Skip

Question # 7

If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =

Choose an answer

1/2

4/3

Skip

Question # 8

The modulus of a vector i-i+ k is:

Choose an answer

√3

√2

∞

Skip

Question # 9

If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p=

Choose an answer

-1

-3

Skip

Question # 10

The positive real number which is the measure of the length of a vector is called the

Choose an answer

Unit vector

Modulus

Inverse

None of these

Skip

Question # 11

If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:

Choose an answer

Orthogonal

Collinear

Perpendicular

None of these

Skip

Question # 12

Vector additon is:

Choose an answer

Commutative

Associative

Commutative and Associative

None of these

Skip

Question # 13

The angle between the vectors u =2i - i + k and v = -i + i is:

Choose an answer

3π/2

2π/3

5π/6

π/3

Skip

Back