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WorksheetsS6_Fundamentals of Automobile Electrical & Electronics Engg
Total questions: 22
Worksheet time: 22mins
What will happen, if we connect capacitor to DC Supply.
It allows DC
It blocks DC
t rectifies
None of these
Hint: Diode is unidirectional and uncontrolled device. In rectifier circuit, diode use as a switch to convert ac to dc for rectification purpose.
What electrical component is used to smooth half wave current signals?
Resistor
Diode
Capacitor
Voltage regulator
A simple diode rectifier has ‘ripples’ in the output wave which makes it unsuitable as a DC source. To overcome this one can use
A capacitor in series with a the load resistance
A capacitor in parallel to the load resistance
Both of the mentioned situations will work
None of the mentioned situations will work
Zener diodes are also known as
Voltage regulators
Forward bias diode
Breakdown diode
None of the mentioned
Zener diodes can be effectively used in voltage regulator. However, they are these days being replaced by more efficient
Operational Amplifier
MOSFET
Integrated Circuits
None of the mentioned
The cut-in point of a capacitor filter is_________
The instant at which the conduction starts
The instant at which the conduction stops
The time after which the output is not filtered
The time during which the output is perfectly filtered
The cut-out point of a capacitor filter is_________
The instant at which the conduction starts
The instant at which the conduction stops
The time after which the output is not filtered
The time during which the output is perfectly filtered
The rectifier current is a short duration pulses which cause the diode to act as a_________
Voltage regulator
Mixer
Switch
Oscillator
The percentage voltage regulation (VL) is given by_________
(VNL-VL)/VNL*100
(VNL+VL)/VNL*100
(VNL-VL)/VL*100
(VNL+VL)/VL*100
The ------------------ measures percentage of AC component in the rectifier output
VL rms
Voltage Regulation
Ripple Factor
Load
Ideally ripple factor should be ------
∞
100%
0%
50 %
The ripple content in the output of a filter is --------------- that in rectifier output
Less than
Same as
Greater than
Which of the following should be done in order to convert a continuous-time signal to a discrete-time signal?
Sampling
Differentiating
Integrating
None of the mentioned
The sequence of operations in which PCM is done is
Quantization , encoding , Sampling
encoding ,Quantization , Sampling
Sampling, encoding ,Quantization ,
Sampling, Quantization , encoding
Quantization noise can be reduced by ________ the number of levels
Decreasing
increasing
doubling
reduced to half
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