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ESE 2021 Technical Quiz 3
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Question 1
A analog output voltage for the input 1001 to a 4 bit D/A converter for all possible inputs assuming the proportionality factor K = 1 will be
Question 2
Voltage and current expressions for the circuit shown below are v(t) = 100e –20t and i(t) = 25e–20t. At a time t 
0. The value of L is
0. The value of L is
Question 3
Statement 1: Conduction current density is related to velocity of charge but not to charge density.
Statement 2: Convection current in a conductor is rate of flow of charge passing a given point reference.
Question 4
Direction: Each of the question consist of two statements, one labeled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answer to these items using the codes given below:
Statement (I): The electrical conductivity of a solid solution alloy drops off rapidly with increased alloy content.
Statement (II): A solid solution has a less regular structurer than a pure metal.
Statement (II): A solid solution has a less regular structurer than a pure metal.
Question 5
Consider the following statements:
The causes of error in the measurement of temperature using a thermistor are
1) Self heating
2) Poor sensitivity
3) Non-linear characteristics
Which of these statements are correct?
The causes of error in the measurement of temperature using a thermistor are
1) Self heating
2) Poor sensitivity
3) Non-linear characteristics
Which of these statements are correct?
Question 6
A thyristor is used in application carrying half sinusoidal current of 100 A peak value as given in figure below. The thyristor must be moderated during conduction to have a constant voltage drop of 1.1 V and dynamic resistance of 8 mΩ. Calculate conduction loss.
Question 7
If Z1, Z2, Z0 are positive, negative and zero sequence impedances of a fully transposed transmission line, then
Question 8
Which of the following DC generator is not suitable for parallel operation.
Question 9
Consider the following statements about Fourier series:
1) Fourier series expansion exists only for periodic signals.
2) For Fourier series expansion, signal should be absolutely integrable over its time period.
3) Fourier series expansion is done using orthogonal functions.
Which of the above statement is/are correct?
Question 10
Consider the following statements regarding crystalline material.
1) Polycrystalline material is stronger than single crystals.
2) Polycrystalline materials are anisotropic.
3) Diamond exist in polycrystalline from.
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ESE & GATE EEGeneralFeb 27ESE & GATE EE
