1.1 A burn must be treated by …
A covering the burnt area with butter - NSC Electrical Technology Digital - Question 1 - 2024 - Paper 1
Question 1
1.1 A burn must be treated by …
A covering the burnt area with butter.
B putting ice on the burn wound.
C puncturing the blisters.
D running cold water over the bur... show full transcript
Worked Solution & Example Answer:1.1 A burn must be treated by …
A covering the burnt area with butter - NSC Electrical Technology Digital - Question 1 - 2024 - Paper 1
Step 1
A burn must be treated by …
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Answer
The correct answer is C: puncturing the blisters, as this allows the fluid to drain which reduces the risk of infection.
Step 2
In an op-amp bistable multivibrator circuit the op amp operates as an …
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Answer
The correct answer is A: comparator, as it compares the input signals and switches between states.
Step 3
A/an … changes its output state when a trigger pulse is received. It remains in that state for a time determined by the RC time constant. Thereafter it returns to its original state.
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Answer
The correct answer is C: monostable multivibrator, as it has one stable state and one temporary state.
Step 4
A circuit used to change a sine wave into a square wave with the same frequency is a …
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Answer
The correct answer is B: Schmitt trigger, as it can convert sine waves into square waves by applying hysteresis.
Step 5
When a positive square wave is applied to the inverting input of an op-amp integrator and the non-inverting input is connected to ground, the capacitor will …
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Answer
The correct answer is C: charge at a constant fixed rate to the negative saturation voltage.
Step 6
The 555 IC functions as a … in an astable mode operation.
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Answer
The correct answer is C: free running oscillator, as it continuously oscillates without external triggering.
Step 7
The main characteristics of operational amplifiers are ...
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Answer
The correct answer is A: very high output impedance, low input impedance, high voltage gain and wide bandwidth.
Step 8
A … output connects the transistor collector to the LED cathode.
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Answer
The correct answer is D: sinking, as this describes a configuration where current flows out of the load.
Step 9
ONE method of displaying information in digital systems is through the use of a ...
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Answer
The correct answer is C: light-dependent resistor, which can vary its resistance based on light exposure.
Step 10
An up/down counter is used as an application in ...
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Answer
The correct answer is D: lifts, as they require counting up and down depending on the request.
Step 11
Choose the correct JK input combinations that will produce a ‘1’ (high) on the output of the JK flip-flop:
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Answer
The correct answer is B: J = 1 and K = 0, leading to a set condition.
Step 12
Microcontrollers can be programmed in various ways. One of the methods to program a microcontroller is to use a flow chart. A flowchart is defined as ...
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Answer
The correct answer is A: block diagram with instructions in the order of execution.
