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DMRC 2018 Electronics Engineering : Quiz 14

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Question 1

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at a distance 2 cm from the centre of the sphere is

Question 2

What percentage of the maximum power is delivered to a load if load resistance is 10 times greater than the Thevenin resistance of the source to which it is connected?

Question 3

A wheat stone bridge has ratio arm of 1000 Ω and 100 Ω resistances, the standard resistance arm consist of 4 decade resistance boxes of 1000, 100, 10, 1 Ω steps. The maximum and minimum value of unknown resistance that can be determined with this setup are:

Question 4

Which is the most suitable thermocouple transducer for the measurement of temperature in the range of 1300^oC to 1500^oC?

Question 5

Consider the given block diagram

The value of A and B, such that the closed loop poles are located at

Question 6

consider the combinational circuit shown below

What is the circuit shown in figure

Question 7

The Laplace transform and the ROC of the signal

_is

Question 8

If a donor impurity is added to the extent of one atom per 10⁸ Ge atoms, calculate its resistivity at 300^oK. Assume μn= 3800 cm²/V.s.[By properties of Germanium, no. of atoms per cm³ is 4.4x10²² atoms/cm³.]

Question 9

The below figure shown a PAM-TDM representation. If each pulse is of width 150 μs then, the guard time is_______μs.

Question 10

For an antenna radiating in free space, the electric field at a distance of 1 km is found to be 12mV/m. Given that intrinsic impedance of the free space is

, the magnitude of average power density due to this antenna at a distance of 2 km from the antenna

is________________.

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ESE & GATE EC General

May 18ESE & GATE EC