Basics of Electrical and Electronics Engineering _MCQ Test-III (Diode & Diode Circuits)
Syllabus of MCQ Test-03
DIODES AND DIODE CIRCUITS:    
PN Junction diode: characteristic and analysis, Types of diodes – Zener diodes, Photodiodes, Light emitting diodes (LED’s), Rectifiers: Half wave, Full wave and Bridge rectifier circuits and their analysis, BJT, types, construction, configurations and characteristics.
Guidelines for MCQ Test-03
• There are 20 questions of total 20marks
•       Each question  carry 01 marks
• Total duration of the test is 1hour.
• Types of questions will be numerical/theoretical having multiple choice, fill in the blanks, Multiple correct option, match the following types.
• Some Question having more than one correct option ,so tick all correct answers.
• There is no negative marking.
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For center tapped full wave rectifier circuit voltage across complete secondary of transformer is 20V ac and if RL=5.5 kohm calculate average load current *
1 point
In a PN junction the potential barrier is due to the charges on either side of the junction, these charges are *
1 point
In CE configuration the input V-I characteristics are drawn by taking *
1 point
The characteristics of a transistor which gives the relation between input current and output current is called _____________ *
1 point
Required
A PN Junction diode is a …………… device *
1 point
In the symbols of P-N-P transistors and N-P-N transistor the arrow on the emitter shows the direction of flow of __________________ *
1 point
If both the junction is in forward biasing in BJT then it's called *
1 point
What is the Transformer Utilization Factor of a centre tapped rectifier. *
1 point
Required
Calculate the common emitter gain for BJT with common base current gain = 0.97 and IB = 50uA. Determine common emitter gain. *
1 point
For a silicon diode, the value of the forward bias voltage typically *
1 point
The approximate value of Vo across the diode shown in the figure below: *
1 point
Captionless Image
If 𝞫=100 , 𝐼𝑏=50μ𝐴 𝐶𝑎𝑙𝑐𝑢𝑙𝑎𝑡𝑒 𝐼𝑒 (𝑒𝑚𝑖𝑡𝑡𝑒𝑟 𝑐𝑢𝑟𝑟𝑒𝑛𝑡) *
1 point
Calculate the values of IC and IE for BJT with common base current gain = 0.97 and IB = 50uA. *
1 point
A transistor connected in CE mode has β = 100 and Ib = 50 µA. Calculate the values of ϒ *
1 point
Required
Depletion region behaves as *
1 point
If the temperature of a diode increases, then leakage current ……….. *
1 point
A Zener diode *
1 point
The basic purpose of filter is to *
1 point
In a centre tapped rectifier the rms secondary voltage is 20 V and load resistance RL = 3 KΩ. Find: rms current *
1 point
For center tapped full wave rectifier circuit voltage across complete secondary of transformer is 20V ac and if RL=5.5 kohm calculate DC Output Voltage *
1 point
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