Electrical Science Mock Paper 1

Solve the following calculation -20 ÷ -4

• -5

• 5

• 8

• 6

Which of the following is correct?

• 22 KW = 22 x 10³ = 22,000 W

• 22 KW = 22 x 10³ = 22,00 W

• 22 KW = 22 x 10¹ = 22,000 W

• 22 KW = 22 x 10² = 220,000 W

Work out angle A.

• 53.1°

• 36.87°

• 38.65°

• 90°

What is the result of the following calculation 20 + 4 x 3 =?

• 72

• 32

• 83

• 64

What is the result of the following calculation (42 x 4) + (6 ÷ 3) - 2 =?

• 42

• 56

• 420

• 168

What is the result of the following calculation 10000 x 100?

• 100,000

• 1000

• 10,000

• 1,000,000.

What is the result of the following calculation: 8³?

• 8

• 24

• 512

• 16

Transpose the following equation P = √3 × V × I × Cos φ in order to find I

• I = P / (√3 × V × Cos φ)

• I = V / (√3 × P × I × Cos φ)

• I = V / (√3 × P + I + Cos φ)

• I = √3 × P × V × Cos φ

If a = 4, c = 8, b = ?

• 8.94

• 48

• 80

• 6.92

Calculate the mean, median and mode of the following numbers: 4, 8, 7, 2, 6, 8.

• Mean = 5.83; median = 4.5; mode = 8

• Mean = 5; median = 9; mode = 8

• Mean = 5.83; median = 6.5; mode = 8

• Mean = 5.83; median = 9.5; mode = 7