NSC Electrical Technology Electronics Integrated Circuits: The layer(s) of the skin that is

Question

The layer(s) of the skin that is/are affected by a third-degree burn would be …
A. The outer layer.
B. The second layer.
C. All layers of the skin.
D. None of the above-mentioned

The power factor in an RLC series circuit will be lagging if VL …
A. Is greater than VC.
B. Is less than VC.
C. Is equal to VC.
D. None of the above-mentioned

A circuit has a resistance of R ohm, inductance of L henry and a capacitance of C farad connected in series. The power factor of the circuit will be unity (1) when …
A. XL is less than XC.
B. XL is greater than XC.
C. XL = XC.
D. R = 0.

Which ONE of the following conditions exists in a resonant parallel RLC circuit?
A. The impedance is minimum.
B. The impedance is maximum.
C. The total current is maximum.
D. The power factor is lagging.

The … is a device that relies on the creation of an electric field within the channel to control current flow.
A. Darlington pair transistor.
B. B junction transistor.
C. Field-effect transistor.
D. Operational amplifier.

When applying a signal to the inverting input of an op amp, phase shift is achieved by the …
A. Cut-off frequency.
B. Internal amplifier circuits.
C. Not frequency.
D. Unity-gain frequency.

Negative feedback in an op amp …
A. Increases the input and output impedances.
B. Decreases the output impedance and the bandwidth.
C. Increases the input impedance and the bandwidth.
D. Does not affect impedances or the bandwidth.

Open-loop gain with reference to op amps is when …
A. A feedback resistor is connected from the output to the inverting input.
B. No feedback resistor is connected from the output to the input.
C. A capacitor is connected from the output to the inverting input.
D. A feedback resistor is connected from the output to the non-inverting input.

When a triangular waveform is applied to the input of a differentiator, the output waveform will be an …
A. DC level.
B. Inverted triangular waveform.
C. First harmonic frequency of the triangular waveform.
D. Square waveform.

The basic circuit of a passive RC differentiator is a …
A. Capacitor in series with the input and a resistor in parallel with the output.
B. Resistor in series with the input and a capacitor in parallel with the output.
C. Resistor in series with the input and a resistor in parallel with the output.
D. Capacitor in series with the input and a capacitor in parallel with the output.

In a class C amplifier, the output collector current will flow through the transistor for … of the input cycle.
A. More than 180º.
B. 90º.
C. 360º.
D. Less than 180º.

The operation of a relaxation oscillator is based on …
A. The charging and discharging of a capacitor.
B. A highly selective resonant circuit.
C. A very stable supply voltage.
D. Lower power consumption.

For an oscillator to maintain oscillation, the gain must be …
A. 1.
B. Less than 1.
C. Greater than 1.
D. Equal to β.

A bipolar junction transistor class B push-pull amplifier with no transformer coupling uses …
A. Two NPN transistors.
B. Two PNP transistors.
C. One NPN transistor.
D. Complementary symmetrical transistors.

The layer(s) of the skin that is/are affected by a third-degree burn would be … A - NSC Electrical Technology Electronics - Question 1 - 2022 - Paper 1

Worked Solution & Example Answer:The layer(s) of the skin that is/are affected by a third-degree burn would be … A - NSC Electrical Technology Electronics - Question 1 - 2022 - Paper 1

The layer(s) of the skin that is/are affected by a third-degree burn would be …

The power factor in an RLC series circuit will be lagging if VL …

A circuit has a resistance of R ohm, inductance of L henry and a capacitance of C farad connected in series. The power factor of the circuit will be unity (1) when …

Which ONE of the following conditions exists in a resonant parallel RLC circuit?

The … is a device that relies on the creation of an electric field within the channel to control current flow.

When applying a signal to the inverting input of an op amp, phase shift is achieved by the …

Negative feedback in an op amp …

Open-loop gain with reference to op amps is when …

When a triangular waveform is applied to the input of a differentiator, the output waveform will be an …

The basic circuit of a passive RC differentiator is a …

In a class C amplifier, the output collector current will flow through the transistor for … of the input cycle.

The operation of a relaxation oscillator is based on …

For an oscillator to maintain oscillation, the gain must be …

A bipolar junction transistor class B push-pull amplifier with no transformer coupling uses …

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