TUEE M.Tech. in Electronics Design & Technology Model Question Papers

TUEE 2016 Tezpur University Admission & Entrance Exam 2016 M.Tech. in Electronics Design & Technology Exam Model Question Papers

M.Tech. in Electronics Design & Technology

Model Questions for Entrance Examination

Full Marks :100 Time :2 Hours

Section A

Darlington paris are frequently used in linear ICs because they
resemble emitter followers.
can be readily formed from two adjacent transistors.
have enormous impedance transformation capability.
none of the above.
A free wheeling diode in a phase controlled converter

(a) causes smoothing of load current.

(b) improves the converter p.f

(d) does all the above

For telephonic conversation the Bandwidth required is approximately

(a) 1KHz

(b) 6KHz

(d) 8KHz

In the BPSK Scheme the number of transmitted symbols are

(a) 4

(b)2

(d) 8

MSK gives the minimum separation of two frequencies used for transmission based on the principle of
power levels
orthogonality

c.noise levels

centre frequency
In a mobile communication system , frequncy reuse is accomplished by employing

(a) a good modulation scheme

(b) a low noise amplifier

(d) an efficient coding system

In digital data communication, the type of transmission in which binary code is transmitted by shifting a carrier frequency between two preset frequencies is called

(a) FSK

(b)ASK

(d) DPSK

ATM uses a fixed -frame structure called

(a) a header

(b) a cell

©a byte

(d) an octet

A time delay t0 in a signal of frequency w

(a) changes its phase spectrum by wto

(b) changes its phase spectrum by -wto

(d) none of these

In order to achieve the same time dealy , higher frequency sinusoids must undergo

( a) lower phase shifts

(b) higher phase shifts

(d) none of these

In CMOS technology the static power dissipation is

(a) low

(b) high

(d) none of these

In VLSI technology the most commonly used pull up is

(a) load resistance

(b) nMOS E-mode

(d) none of these

The trapped charges in the oxide of a N-channel E-MOS normally

(a) increases V TH

(b) decreases VTH

(d) none of these

If we touch the gate terminal of a MOSFET,the ESD may damage the device by breaking down the

(a) drain substrate junction

(b)oxide layer

(d) insulator – semiconductor interface

Alieasing distortion occurs

(a) if a signal is sampled at a rate lower than the Nyquist rate

(b)if a signal is sampled at a rate higher than the Nyquist rate

(d) if the reconstruction D to A converter does not have proper Low pass filter

Which of the following is not a property of DTFT X(w)

(a) X (w) is 2 p periodic

(b) X (w) is always real

(d) X (w) contains information about the corresponding analog spectrum

A digital signal has redundancy if

(a) the samples are correlated

(b) all the values of the samples occur with unequal probability

(d) all the above

VCO generates

(a) an output voltage

(b) an output frequency

(d) none of these

Compensation of a second order system is useally done to

(a) increase its damping ratio

(b) decrease its damping ratio

(d) decrease the time constant

Section B

20 Design an asynchronous ripple counter of mod -10 using JK flip flop.

A 10 bit bipolar successive approximation type ADC with a reference voltage of +5 volts works from a clock of 10 MHz. Determine the resolution , maximum conversion error and maximum time of conversion.
A copper – Constantine thermocouple of sensitivity 40 mV/0C is heated to a temperature of 2000C with reference junction temperature at 250C.The output voltage is amplified by an amplifier of gain 100 and then displayed in a 31/2 digit multimeter. What is the displayed voltage and find also the resolution.

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TUEE M.Tech. in Electronics Design & Technology Model Question Papers

Section B

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