A burn must be treated by …
A covering the burnt area with butter - NSC Electrical Technology Digital - Question 1 - 2024 - Paper 1
Question 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 burnt ar... show full transcript
Worked Solution & Example Answer: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 …
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is C: puncturing the blisters. Treating burns improperly can lead to infections and complications, so puncturing blisters is an important step to manage the injury properly.
Step 2
In an op-amp bistable multivibrator circuit the op amp operates as an a/n …
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is C: differential. In this configuration, the op-amp acts as a comparator for the bistable multivibrator.
Step 3
A/n ... 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.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is C: monostable multivibrator. This device changes state and holds it based on the timing configurations set by the RC components.
Step 4
A circuit used to change a sine wave into a square wave with the same frequency is a ...
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is B: Schmitt trigger. This device provides hysteresis to create a square wave from a sine wave, effectively changing transitions.
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 …
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is A: charge exponentially to the supply voltage. The behavior of the integrator is characterized by this exponential charging pattern.
Step 6
The 555 IC functions as a ... in an astable mode operation.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is C: free running oscillator. In the astable mode, the 555 timer generates a continuous square wave output.
Step 7
The main characteristics of operational amplifiers are ...
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is A: very high output impedance, low input impedance, high voltage gain and wide bandwidth. These properties make operational amplifiers versatile in various applications.
Step 8
A ... output connects the transistor collector to the LED cathode.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is D: sinking. A sinking output pulls the current through the device and connects to ground.
Step 9
ONE method of displaying information in digital systems is through the use of a ...
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is C: light-dependent resistor. This device changes resistance based on light exposure, useful in displaying digital information.
Step 10
An up/down counter is used as an application in ...
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is D: lifts. Up/down counters track the positions of the floors in lift systems.
Step 11
Choose the correct JK input combinations that will produce a '1' (high) on the output of the JK flip-flop:
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is B: J = 1 and K = 0. This combination will set the flip-flop to a high output.
Step 12
Microcontrollers can be programmed in various ways. One of the methods to program a microcontroller is to use a flow chart. A flow chart is defined as ...
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is A: block diagram with instructions in the order of execution. Flow charts guide the execution process of programs.
