Engineering

Question 1

1Which is a renewable source of energy?

Easy

A. coal B. wind C. natural gas D. diesel

Question 2

2A gas at 100 kPa occupies 2 L. At constant temperature it is compressed to 1 L. What is the new pressure?

Medium

A. 400 kPa B. 200 kPa C. 100 kPa D. 50 kPa

Question 3

3Brainstorming in the design process is used to

Easy

A. calculate taxes B. test products C. generate many possible solutions D. sell products

Question 4

4Efficiency of a motor that converts 800 J of 1,000 J input into useful work is

Easy

A. 80% B. 125% C. 20% D. 8%

Question 5

5A survey of how and where a building uses energy, to find savings, is an

Easy

A. environmental impact only B. energy audit C. architectural drawing D. insurance claim

Question 6

61 megawatt is equal to

Easy

A. 100 W B. 10⁹ W C. 1,000,000 W D. 1,000 W

Question 7

7Stainless steel resists rusting because it contains

Easy

A. copper B. lead C. chromium D. tin

Question 8

8Convert 2.5 kN to newtons.

Easy

A. 250 N B. 2,500 N C. 25 N D. 25,000 N

Question 9

9The branch of engineering concerned with machines, engines and mechanisms is

Easy

A. civil engineering B. chemical engineering C. geomatic engineering D. mechanical engineering

Question 10

10An inclined plane reduces the

Easy

A. effort needed to raise a load B. height C. load D. work done

Question 11

11For the same beam (4 m, central 10 kN load), the maximum bending moment is

Hard

A. 20 kN m B. 10 kN m C. 40 kN m D. 5 kN m

Question 12

12Which of these is a renewable energy source?

Easy

A. diesel B. natural gas C. solar energy D. coal

Question 13

13A PLC is commonly used to

Easy

A. play music B. browse the web C. write essays D. control machines in factories

Question 14

14A steel rod of area 100 mm² carries a tensile load of 20 kN. The stress is

Hard

A. 2 N/mm² B. 2,000 N/mm² C. 20 N/mm² D. 200 N/mm²

Question 15

15A pulley system lifts 800 N with 250 N effort and has VR 4. Its efficiency is

Hard

A. 80% B. 31% C. 320% D. 25%

Question 16

16A material with stress 200 MPa and strain 0.001 has Young's modulus

Hard

A. 200 GPa B. 20 GPa C. 2 GPa D. 200 MPa

Question 17

17Bronze is an alloy of copper and

Easy

A. tin B. zinc C. lead D. iron

Question 18

18The ability of a material to absorb energy without breaking, such as resisting impact, is

Easy

A. toughness B. hardness C. brittleness D. density

Question 19

19Bernoulli's principle explains

Easy

A. why sound echoes B. how magnets work C. why ice melts D. how faster-moving fluid has lower pressure

Question 20

20U-value in building insulation measures

Hard

A. its weight B. its colour C. the rate of heat transfer through a material D. its cost