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Question 1

A car starts from point X and reaches point Y, and then comes back to initial point X. The displacement of this car is:

Answer 1

B. Zero

Question 2

Magnetic lines of force are:

Answer 2

B. closed continuous curves

Question 3

Magnetic lines of force are crowded in a region of:

Answer 3

B. Strong magnetic field

Question 4

What is the SI unit of charge?

Answer 4

A. Coulomb

Question 5

The direction of magnetic field lines inside a magnet is from:

Answer 5

C. North to south

Question 6

Which of the following is not a special feature of magnets?

Answer 6

C. Like poles repel each other and unlike poles attract each other.

Question 7

The heat required to change a solid to a liquid is called the heat of:

Answer 7

C. Fusion

Question 8

One of the functions of a Gear is to change the speed of rotation.

Answer 8

A. True

Question 9

The direction of electronic current is from:

Answer 9

A. Negative terminal to positive terminal

Question 10

Power is the rate of doing work. It is measured in:

Answer 10

C. J/s

Question 11

Terminal velocity is proportional with:

Answer 11

C. The mass, shape and size of the object.

Question 12

Which of the following is not a circuit element?

Answer 12

B. Electric current

Question 13

Magnitude of e.m.f produced in a coil, when a magnet is inserted into it; does not depend upon:

Answer 13

C. Resistance of the coil

Question 14

Electromagnetic Induction is defined as:

Answer 14

B. The phenomenon of producing induced current in a closed circuit or coil due to the change in magnetic field in the circuit or a closed coil

Question 15

Choose the correct statement:

Answer 15

B. Two magnetic lines of force can never intersect each other

Question 16

Streamline flow exists when succeeding molecules follow a steady path.

Answer 16

A. True

Question 17

Vehicles carrying inflammable materials usually have metallic ropes touching the ground during motion because of:

Answer 17

C. Current electricity

Question 18

The voltmeter is connected in __________ while ammeter is connected in:

Answer 18

C. Parallel, series

Question 19

The difference(s) between AC and DC generator is:

Answer 19

D. All are correct.

Question 20

The concept of simple machines are the foundation of all mechanical devices.

Answer 20

A. True

Question 21

When resistors are connected in series:

Answer 21

C. The current flow in each resistor is the same and the sum of the voltage drops over each resistor is equal to the total EMF applied.

Question 22

What is the definition of CONDUCTION?

Answer 22

C. When heat transfers from objects that are touching.

Question 23

A student uses three small plotting compasses to investigate the magnetic field around a bar magnet. Which diagram shows the directions in which the compass needles point?

Answer 23

B. B

Question 24

Temperature is a measurement of the:

Answer 24

C. average kinetic energy of atoms or molecules.

Question 25

The mathematical form of Charles' Law is VT = Constant.

Answer 25

B. True

Question 26

The centripetal force is directly proportional to:

Answer 26

C. Square of velocity

Question 27

If the velocity of an object moving in a circular motion is increased two times, then:

Answer 27

C. Centripetal force needed will be quadrupled.

Question 28

Molecules are in continuous motion at:

Answer 28

D. Temperatures at or above 0 K only

Question 29

The equation of continuity states that:

Answer 29

A. When a fluid flows through a pipe its mass flow must remain constant, since mass can neither be created or destroyed (conservation of mass).

Question 30

Newton’s 2nd law states that an unbalanced force varies:

Answer 30

B. Inversely with mass and directly with acceleration.

Question 31

A body is said to be in equilibrium if all the forces acting on it:

Answer 31

C. Have zero resultant.

Question 32

Swimming is based on the principle of:

Answer 32

A. Newton’s 3rd Law.

Question 33

If a body returns to its original position, when the disturbing force is removed is known as:

Answer 33

B. Stable

Question 34

The axis that extends crosswise from wingtip to wingtip is called the:

Answer 34

A. Lateral Axis

Question 35

Aircraft movement about the lateral axis is known as:

Answer 35

B. Pitch

Question 36

Action and reaction:

Answer 36

C. All of the answers are correct.

Question 37

Force is an external effort in the form of push or pulls which:

Answer 37

B. All of the answers are correct.

Question 38

A roller coaster speeds along a track with considerable momentum. If a different roller coaster travels at four times the speed but as half as much mass, its momentum would be:

Answer 38

C. Twice as much

Question 39

Select the correct statement:

Answer 39

D. The centre of gravity is the point about which a solid will freely rotate if it is not constrained

Question 40

Charles' Law gives the relationship between ______ and temperature, if pressure and mass are held constant.

Answer 40

C. Volume

Question 41

What are the two types of motion possible with balanced forces?

Answer 41

D. Not moving or moving with constant speed in a straight line

Question 42

The energy transfer that occurs when a bulb is lit using a battery:

Answer 42

C. Chemical to electric to light and heat

Question 43

Which is the best example that something has kinetic energy?

Answer 43

B. a tennis ball rolling across the court

Question 44

The velocity of an airplane is doubled keeping mass constant. What will happen to the kinetic energy?

Answer 44

A. Kinetic energy will be quadrupled

Question 45

Slow change in velocity is given by:

Answer 45

B. Shallow slope

Question 46

If an atom, in its balanced state, has 8 protons and 12 neutrons, how many electrons will it have?

Answer 46

C. 8

Question 47

1 degree rise on the centigrade scale will cause a:

Answer 47

C. 1.8 degree rise in Fahrenheit

Question 48

The prefix μ (micro) means:

Answer 48

C. 10-6

Question 49

The slope of a distance time graph indicates:

Answer 49

A. Velocity of object

Question 50

We can explain sound wave as:

Answer 50

C. Mechanical wave

Question 51

If an aircraft is loaded with cold fuel, its range will:

Answer 51

A. Decrease

Question 52

In the atmosphere, the air density increases with increase in altitude.

Answer 52

B. False

Question 53

An electrical device shown below is:

Answer 53

B. A transformer

Question 54

Final result of Bernoulli’s Theorem is:

Answer 54

A. Dynamic Pressure + static pressure = total pressure.

Question 55

According to Fleming’s right-hand rule:

Answer 55

C. Current is represented by the second finger.

Question 56

Supersonic:

Answer 56

B. Is when the speed is higher than the speed of sound.

Question 57

For the DC generator, the galvanometer will always show:

Answer 57

A. Positive voltage wave.

Question 58

At constant volume, density is inversely proportional to mass.

Answer 58

A. True

Question 59

The larger the power, the faster the _______________ done in unit time.

Answer 59

C. Work or energy transfer.

Question 60

Which of the following material is a poor thermal conductor?

Answer 60

D. glass