MCQ

Power

A force of 1000 N is needed to lift the hook of a crane at a steady velocity. The crane is then used to lift a load of mass 1000 kg at a velocity of 0...

2010 Summer

MCQ

Power

A force of 1000 N is needed to lift the hook of a crane at a steady velocity. The crane is then used to lift a load of mass 1000 kg at a velocity of 0...

2010 Summer

MCQ

Power

A steam turbine is used to drive a generator. The input power to the turbine is $P_I$ and the output power $P_O$. The power loss in the turbine is $P_...

2010 Winter

MCQ

Power

What are units of work, energy and power?

2010 Winter

MCQ

Power

The diagram shows a lift system in which the elevator (mass $m_1$) is partly counterbalanced by a heavy weight (mass $m_2$). At what rate does the mo...

2010 Winter

Theory

Power

(a) Distinguish between gravitational potential energy and electric potential energy. [2] (b) A body of mass $m$ moves vertically through a dist...

2011 Winter

MCQ

Power

The force resisting the motion of a car is taken as being proportional to the square of the car’s speed. The magnitude of the force at a speed o...

2012 Summer

MCQ

Power

A car engine exerts an average force of 500 N in moving the car 1.0 km in 200 s. What is the average power developed by the engine?

2012 Summer

MCQ

Power

A wind turbine has blades that sweep an area of 2000 m2. It converts the power available in the wind to electrical power with an efficiency of 50%. W...

2013 Summer

MCQ

Power

The diagram shows a wheel of circumference 0.30 m. A rope is fastened at one end to a force meter. The rope passes over the wheel and supports a freel...

2013 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which pair of quantities contains one vector and one scalar quantity?

2013 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

One property Q of a material is used to describe the behaviour of sound waves in the material. Q is defined as the pressure P of the sound wave divide...

2013 Summer

MCQ

CH3 - KINEMATICS

A cannon fires a cannonball with an initial speed $v$ at an angle $\alpha$ to the horizontal. Which equation is correct for the maximum height $H$ re...

2013 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A wave has a frequency of 5 GHz. What is the period of the wave?

2013 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

In an experiment to determine the acceleration of free fall $g$, the period of oscillation $T$ and length $l$ of a simple pendulum were measured. The ...

2013 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The Y-input terminals of a cathode-ray oscilloscope (c.r.o.) are connected to a supply of amplitude 5.0 V and frequency 50 Hz. The time-base is set at...

2013 Summer

MCQ

CH3 - KINEMATICS

A body is released from rest and falls vertically in air of constant density. Which statement about the motion of the falling body is correct?

2013 Summer

MCQ

CH3 - KINEMATICS

A goods train passes through a station at a steady speed of 10 m s$^{-1}$. An express train is at rest at the station. The express train leaves the st...

2013 Summer

MCQ

CH3 - KINEMATICS

A car is stationary at traffic lights. When the traffic lights go green, the driver presses down sharply on the accelerator. The resultant horizontal ...

2013 Summer

MCQ

CH4 - DYNAMICS

Which of the following is a statement of the principle of conservation of momentum?

2013 Summer