FE Flashcards
A car starts from point X and reaches point Y, and then comes back to initial point X. The displacement of this car is:
B. Zero
Magnetic lines of force are:
B. closed continuous curves
Magnetic lines of force are crowded in a region of:
B. Strong magnetic field
What is the SI unit of charge?
A. Coulomb
The direction of magnetic field lines inside a magnet is from:
C. North to south
Which of the following is not a special feature of magnets?
C. Like poles repel each other and unlike poles attract each other.
The heat required to change a solid to a liquid is called the heat of:
C. Fusion
One of the functions of a Gear is to change the speed of rotation.
A. True
The direction of electronic current is from:
A. Negative terminal to positive terminal
Power is the rate of doing work. It is measured in:
C. J/s
Terminal velocity is proportional with:
C. The mass, shape and size of the object.
Which of the following is not a circuit element?
B. Electric current
Magnitude of e.m.f produced in a coil, when a magnet is inserted into it; does not depend upon:
C. Resistance of the coil
Electromagnetic Induction is defined as:
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
Choose the correct statement:
B. Two magnetic lines of force can never intersect each other
Streamline flow exists when succeeding molecules follow a steady path.
A. True
Vehicles carrying inflammable materials usually have metallic ropes touching the ground during motion because of:
C. Current electricity
The voltmeter is connected in __________ while ammeter is connected in:
C. Parallel, series
The difference(s) between AC and DC generator is:
D. All are correct.
The concept of simple machines are the foundation of all mechanical devices.
A. True
When resistors are connected in series:
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.
What is the definition of CONDUCTION?
C. When heat transfers from objects that are touching.
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?
B. B
Temperature is a measurement of the:
C. average kinetic energy of atoms or molecules.
The mathematical form of Charles’ Law is VT = Constant.
B. True
The centripetal force is directly proportional to:
C. Square of velocity
If the velocity of an object moving in a circular motion is increased two times, then:
C. Centripetal force needed will be quadrupled.
Molecules are in continuous motion at:
D. Temperatures at or above 0 K only
The equation of continuity states that:
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).
Newton’s 2nd law states that an unbalanced force varies:
B. Inversely with mass and directly with acceleration.
A body is said to be in equilibrium if all the forces acting on it:
C. Have zero resultant.
Swimming is based on the principle of:
A. Newton’s 3rd Law.
If a body returns to its original position, when the disturbing force is removed is known as:
B. Stable
The axis that extends crosswise from wingtip to wingtip is called the:
A. Lateral Axis
Aircraft movement about the lateral axis is known as:
B. Pitch
Action and reaction:
C. All of the answers are correct.
Force is an external effort in the form of push or pulls which:
B. All of the answers are correct.
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:
C. Twice as much
Select the correct statement:
D. The centre of gravity is the point about which a solid will freely rotate if it is not constrained
Charles’ Law gives the relationship between ______ and temperature, if pressure and mass are held constant.
C. Volume
What are the two types of motion possible with balanced forces?
D. Not moving or moving with constant speed in a straight line
The energy transfer that occurs when a bulb is lit using a battery:
C. Chemical to electric to light and heat
Which is the best example that something has kinetic energy?
B. a tennis ball rolling across the court
The velocity of an airplane is doubled keeping mass constant. What will happen to the kinetic energy?
A. Kinetic energy will be quadrupled
Slow change in velocity is given by:
B. Shallow slope
If an atom, in its balanced state, has 8 protons and 12 neutrons, how many electrons will it have?
C. 8
1 degree rise on the centigrade scale will cause a:
C. 1.8 degree rise in Fahrenheit
The prefix μ (micro) means:
C. 10-6
The slope of a distance time graph indicates:
A. Velocity of object
We can explain sound wave as:
C. Mechanical wave
If an aircraft is loaded with cold fuel, its range will:
A. Decrease
In the atmosphere, the air density increases with increase in altitude.
B. False
An electrical device shown below is:
B. A transformer
Final result of Bernoulli’s Theorem is:
A. Dynamic Pressure + static pressure = total pressure.
According to Fleming’s right-hand rule:
C. Current is represented by the second finger.
Supersonic:
B. Is when the speed is higher than the speed of sound.
For the DC generator, the galvanometer will always show:
A. Positive voltage wave.
At constant volume, density is inversely proportional to mass.
A. True
The larger the power, the faster the _______________ done in unit time.
C. Work or energy transfer.
Which of the following material is a poor thermal conductor?
D. glass
