WorksheetsSystems Engineering Exam (2015)
Total questions: 20
Worksheet time: 20mins
Which one of the following devices does not use magnetic fields for its operation?
relay
solenoid
transistor
transformer
Given that the voltage setting is 3 V per division, the peak-to-peak voltage is
3 V
6 V
9 V
18 V
Given that the time setting is 1 ms per division, the frequency of the signal is
250 Hz
4 Hz
4 kHz
0.25 Hz
Which one of the following logic gates can replace the two logic gates shown above?
OR
NOR
AND
NAND
Starting from the left, what are the names of the electrical components shown in the diagram above?
variable resistor, photo diode, capacitor, cell
variable resistor, photo diode, cell, capacitor
photo diode, variable resistor, capacitor, cell
photo diode, variable resistor, cell, capacitor
Four 12 V batteries, rated each at 4 Ah, are placed in an arrangement as shown below. The voltage output of this arrangement of batteries is
6 V
12 V
24 V
48 V
Four 12 V batteries, rated each at 4 Ah, are placed in an arrangement as shown below. How many hours would the batteries be likely to last if the arrangement was used to power a device rated at 96 W?
1
2
4
6
The total resistance of the three-resistor arrangement shown above is
3 Ω
4 Ω
6 Ω
36 Ω
The diagram above shows a pulley system with a 6 kg mass attached. Ignoring the mass of the lower pulley and taking the gravitational constant to be g = 10 ms–2, the minimum force needed to keep the 6 kg mass in equilibrium is
2 N
20 N
30 N
60 N
The wheel shown above has 200 N m of torque and a 40 cm diameter. If we assume full contact and no slippage, the force of the wheel on the road is
5 N
10 N
500 N
1000 N
A speed of 2.592 ms–1 expressed to two significant figures is
2.5
2.59
2.6
2.6
The gear ratio of the compound gear train shown above is
1:5
1:10
5:01
10:1
