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 burn... 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 treatment for a burn is to run cold water over the burnt area until the pain reduces. This helps cool the burn and reduce damage.
Step 2
In an op-amp bistable multivibrator circuit the op amp operates as an/a …
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Answer
In this circuit, the op-amp operates as a comparator, which is essential for determining the output state of the bistable multivibrator.
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
This describes a monostable multivibrator, which changes state on receiving a trigger and returns after a specific duration set by the RC time constant.
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
This function is performed by a Schmitt trigger, which provides a clean transition from the sine wave to a square wave.
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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The capacitor will charge exponentially to the supply voltage when the square wave is high, and discharge exponentially to 0 V when it is low.
Step 6
The 555 IC functions as a … in an astable mode operation.
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Answer
In astable mode, the 555 timer acts as a free running oscillator, generating a continuous square wave output.
Step 7
The main characteristics of operational amplifiers are …
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Answer
Operational amplifiers are characterized by 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
This describes a sinking output configuration, appropriate for driving LEDs.
Step 9
ONE method of displaying information in digital systems is through the use of a …
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Answer
A light-emitting diode is a common method of displaying information in digital systems, acting as an indicator.
Step 10
An up/down counter is used as an application in …
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Answer
Up/down counters are typically used in frequency dividers, gears, and various applications including lifts.
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 combination J = 1 and K = 0 will produce a '1' (high) on the output, setting the flip-flop.
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
A flowchart is defined as a block diagram with instructions in the order of execution, guiding the programming logic.
