Questions 21–30 of 239. Imported answers require independent review unless marked reviewed.

Topic practice 239 questionsPage 3 of 24

Question 61

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The diode in the circuit shown below is ideal. The input voltage (in Volts) is given by

, where time

is in seconds.
The time duration (in ms, rounded off to two decimal places) for which the diode is forward biased during one period of the input is __________.
Diagram for Electronics and Communication Engineering question 61


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Question 62

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In the circuit shown below, the AND gate has a propagation delay of 1 ns. The edge-triggered flip-flops have a set-up time of 2 ns, a hold-time of 0 ns, and a clock-to-Q delay of 2 ns.
The maximum clock frequency (in MHz, rounded off to the nearest integer) such that there are no setup violations is __________.
Diagram for Electronics and Communication Engineering question 62


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Question 63

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An ideal p-n junction germanium diode has a reverse saturation current of 10

A at 300 K.
The voltage (in Volts, rounded off to two decimal places) to be applied across the junction to get a forward bias current of 100 mA at 300 K is ____.
(Consider the Boltzman constant

J/K and the charge of an electron

C.)

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Question 64

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A 50

lossless transmission line is terminated with a load

of

.
If the average incident power on the line is 10 mW, then the average power delivered to the load (in mW, rounded off to one decimal place) is __________.

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Question 65

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Two resistors are connected in a circuit loop of area 5 m

, as shown in the figure below. The circuit loop is placed on the x-y plane.
When a time-varying magnetic flux, with flux-density

(in Tesla), is applied along the positive z-axis, the magnitude of current

(in Amperes, rounded off to two decimal places) in the loop is ________.
Diagram for Electronics and Communication Engineering question 65


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Question 27

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A machine has a 32-bit architecture with 1-word long instructions. It has 24 registers and supports an instruction set of size 40. Each instruction has five distinct fields, namely opcode, two source register identifiers, one destination register identifier, and an immediate value. Assuming that the immediate operand is an unsigned integer, its maximum value is ________.

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Question 28

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An amplitude modulator has output (in Volts)

The carrier power normalized to 1

resistance is 50 Watts. The ratio of the total sideband power to the total power is 1/9. The value of

(in Volts, rounded off to two decimal places) is ______ .

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Question 29

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In a number system of base

, the equation

has

as one of its solutions. The value of

is ______.

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Question 30

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Let

and

denote the set of real numbers and the three dimensional vector space over it, respectively. The value of

for which the set of vectors

does not form a basis of

is ______.

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Question 31

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In the given circuit, the current

(in mA) is ______.
Diagram for Electronics and Communication Engineering question 31


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