JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech I Year FUNDAMENTALS OF ELECTRICAL AND ELECTRONICS ENGINEERING Previous Question Paper (January/February - 2024 - R22)
Part-A is a compulsory question which consists of ten sub-questions from all units carrying equal marks. Part-B consists of ten questions (numbered from 2 to 11) carrying 10 marks each. From each unit, there are two questions and the student should answer one of them.
Part A
Write the relationship between voltage and current in a inductor.
Answer
The relationship between voltage v and current i in an inductor is given by v = L(di/dt), where L is the inductance.
What is a mesh?
Answer
A mesh is a loop that does not contain any other loops within it.
Define peak factor.
Answer
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What is meant by phase difference?
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What a commutator does in d.c generator?
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What are the parts of an alternator?
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How a diode behaves in reverse bias?
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What is an ideal diode?
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How many junctions are there in BJT?
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What are the types of BJT?
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Part B
What are the types of electrical sources? Explain.
Answer
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Using mesh analysis, find the current 'I' in the circuit below figure 1.
Answer
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What are Kirchoff’s laws? Explain with examples.
Answer
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Using nodal analysis, find the current 'I' in the circuit below figure 2.
Answer
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Derive the expression for the steady state current in series RL circuit with sinusoidal voltage source.
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The current flowing through a circuit is 10 ∠ 30° A when a voltage of 200 ∠ -15° V is applied. Calculate the components of the circuit if frequency of the supply is 50 Hz.
Answer
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What is the average value of sinusoidal voltage source? Derive it.
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Determine the voltage across resistor and capacitor in the circuit below figure 3.
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Explain the constructional features of DC machines in detail.
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How 3-phase induction motor works? Explain.
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How EMF is induced in DC generator? Explain.
Answer
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Explain the principle of operation of transformer.
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How a PN Junction diode works? Explain.
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Explain the working of half wave rectifier?
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Draw the V-I characteristics of PN junction diode and explain.
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Explain the working of full wave bridge rectifier?
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How a BJT works? Explain in detail.
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Explain the CB configuration of BJT with the help of neat circuit diagram.
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Explain about the doping level and size of the layers of BJT.
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Discuss about the differences between different configurations of BJT.
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