Q.1
14 Marks(a)
Describe the characteristics of Zener diode.
(b)
Differentiate Avalanche breakdown and Zener breakdown.
(c)
Describe forward and reverse bias operation of a P-N junction diode.
Gujarat Technological UniversitySummer 2026 examination
GTU BE01000111 Basic Electronics Engineering Summer 2026 Question Paper & PDF
B.E. · Common Engineering · Semester 1 · Subject code BE01000111GTU also lists this paper as BE01R00111
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Explain Voltage Doubler circuit.
(b)
Explain zener diode as a Voltage regulator.
(c)
Describe operation of full-wave rectifier with necessary figures.
OR
(c)
A transformer having a secondary voltage of 100 V(rms) is used in a full-wave bridge rectifier. The diode has a resistance of 10 Ω and the load resistance is 90 Ω. Calculate
i)Im,
ii)Idc,
iii)Idc through each diode,
iv)Pdc,
v)γ,
vi)% regulation, and
vii)PIV of each diode.
Q.3
14 Marks(a)
Draw the symbol of NPN & PNP transistor, write its different operating regions and explain why it is called “Bipolar Transistor”.
(b)
Show application of transistor as a switch.
(c)
Describe CE configuration with input and output characteristics in detail.
OR
(a)
For a bipolar junction transistor, αdc is 0.98 and base current is 50 μA, then find βdc, IC & IE.
(b)
What do you understand by transistor biasing and why it is required?
(c)
Describe the operation of voltage divider bias circuit using an NPN transistor and write its voltage and current equation.
Q.4
14 Marks(a)
Define saturation current, pinch-off voltage and transconductance in JFET.
(b)
Give the comparison of FET and BJT.
(c)
Describe operation of of N-Channel JFET with drain characteristics and transfer characteristics.
OR
(a)
What is Self Bias in JFET? Draw the circuit.
(b)
Draw DC load line and indicate the Q-point for a given JFET circuit.
(c)
Describe the construction and operation of Enhancement type N-channel MOSFET.
Q.5
14 Marks(a)
Describe RC filter with its limitations
(b)
Describe LED with its applications.
(c)
Discuss the construction and working of a solar cell. Highlight its applications.
OR
(a)
Explain the working of Emitter follower.
(b)
Give the differences between CB, CE, and CC configurations in BJTs.
(c)
Explain the construction and applications of a varactor diode.
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About this paper
Official Gujarat Technological University (GTU) examination paper for Basic Electronics Engineering (Summer 2026, B.E. · Common Engineering, Sem 1). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.