WorksheetsSystems Engineering Exam (2009)
Total questions: 20
Worksheet time: 20mins
Sprocket A drives sprocket B using a chain as shown in the diagram. Given that sprocket A has 19 teeth and rotates at 1500 rpm, what is the rpm of sprocket B which has 38 teeth?
A. 750 rpm
B. 1000 rpm
C. 1750 rpm
D. 3000 rpm
When transferring power from sprocket A to sprocket B, the chain that connects sprocket A to sprocket B is subject to which of the following forces?
A. compression
B. tension
C. torsion
D. sheer
In the diagram above, the force, F, needed to hold the weight still is
A. 12 newton.
B. 16 newton.
C. 24 newton.
D. 48 newton.
Component A on the diagram above interlocks with component B to stop the winch from being released. Component A is called a
A. pawl.
B. clutch.
C. ratchet.
D. free wheel.
Gear X shown in the diagram above is a
A. worm gear.
B. crown gear.
C. bevel gear.
D. rack gear.
On the diagram of the car handbrake lever above, what is the correct position of the effort, load and fulcrum (respectively)?
X Y Z
Z Y X
Y X Z
X Z Y
On the diagram above, the force applied to the handbrake lever by the operator’s hand is 40 N. What is the force applied to the cable?
A. 100 N
B. 200 N
C. 300 N
D. 700 N
In the diagram above, if gear X moves clockwise then gear Z will rotate
A. clockwise and faster than gear X.
B. clockwise and slower than gear X.
C. anticlockwise and faster than gear X.
D. anticlockwise and slower than gear X.
The correct labelling order for the three terminals of the junction transistor above is
A. X = base Y = collector Z = emitter
B. X = collector Y = base Z = emitter
C. X = emitter Y = collector Z = base
D. X = collector Y = emitter Z = base
The electric current flowing from the 9-volt battery in the circuit above depends on the state of switches S1 and S2. Which of the combinations below will give the greatest electric current flowing from the battery?
A. S1 open S2 open
B. S1 open S2 closed
C. S1 closed S2 closed
D. S1 closed S2 open
Each single resistor in the arrangements shown above has a value of 3 ohms. Which arrangement will have a combined resistance of 2 ohms?
The 4011 integrated circuit shown above has four logic gates. To test the logic gate connected to pins 1, 2 and 3, voltage values are measured and recorded as high or low. Which table below represents a correct operation of that logic gate?
A resistor with a resistance value between 560 ohms and 1200 ohms is needed for a project. The four-band resistor with the colours shown will meet this requirement if colour X is
yellow
brown
black
red
A flow chart for a microcontroller program is given below. High 0 turns a light-emitting diode (LED) on. Low 0 turns it off. ‘Wait 1’ is a one-second delay. How many times will the LED turn on and off in this program?
A. once
B. 10 times
C. 20 times
D. 25 times
