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6% SEMESTER,
EMESTER EXAMINATION __(Mareh-2020)
EE-302-ELECTRIC DRIVES
Maximum Marks:20
3 Giving reasons explain briefly, why?(détempt any five)
a] For stable operation of the drive > 1,
SP] With dynamic braking the torque becomes zero speed for separately excited DC
motor, while torque sieges to zero beforé zero speed for DC series motor.
swe] Large de-rating is considered for 1 as against 30 converter fed sep. excited DC
moter drive.
SINo.|Bus Voltage | Generation owaR v
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4. Draw the impedance diagram showing all impedances in per unit, 2 1a)
the following system. a
Tr LR we
O40 a
Thi TLs "ad
Load F ~~,
The various ratings areas follows:
Generator Gi : 50 MVA, 13.2kV,K=0.15 pu, 3
Generator Ga : 20 MVA, 13.8KV,X=0.15 pu“ % ,
Transformer Ti :80 MVA, 13.2 kV AN165 KV -Y, X
Transformer Ty :40 MVA, 13.8 kV A/165 Y.kV_X
Transmission Line TLi:Z=(50+j200) ohm
______Transmission Line TLz and TL; : 2 = 25 + j100) ot
eee. JSF BRINE, Operating at Sy
e a base of | ‘ "an
transmission line Ee forthe system and 132 ky base in the
-10 pu
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Total No. i
lo. of Pages 02 Roll No. ..
VI SEMESTER
aoe SEM EXAMINATION
EE306 MICROPROCESSORS & MICROCONTROLLERS
CHOURE ‘Max. Marks : 20
tempt all questions.
Assume suitable missing data, if any. |
Draw neat and clean diagrams wherever necessary Jinstructed. |
Qa} Giving suitable reasons, explain why:
. EPROM/PROM and RAM are required by 8085 uP and
ROM is always placed in the first slot of memory.
si. The bus operation is regulated through tri-state buffers.
id Addition of similar signed numbers only can result in an
overflow.
iv. A machine cycle cannot be completed in 5 T-states.
Y. 8085 P does not sample READY signal during BI
machine cycle. [hs]
[bj] Fill in the blanks or return values as instructed:
i Testates consumed in the execution of instmetion DAA
are
ii. 8954H in Q1S formatis equal to in base 10.
iii, If data is one arithmetic right shift, the new data
is
iv. Which interrupts remain active after execution of
following instructions:
SUB A;
SIM;
y, After the execution of following instructions the bit-wise
Status of flag register is
‘ LXISP, FFFDs;
POP PSW; [1x5]
FFFC 18
FFFD 2D.
FEFE 64
FFFF 4 eee Si
i #3 of ROM
Q2 Design a memory system for 8085A with ie te A tayicta
: followed by 4 k bytes of RAM. Implemen' ee sumon VO. It
using 2147 SRAM organised as 4k X J, a a aes
has two contfol lines, CE & WE. To read the ¢ one ae
WE =1.To write the device CE =0 & WE = ern.
decoding, use a 74LS138 decoder. Draw logic fe ee
memory system and address bit map. Other require = ae
be implemented using standard gates. ROM is implem :
using 27128A which is a 16k X 8 EPROM device. ) [3]
Q3 Draw the timing diagram for the instruction OUT 255. [2]
Q4 Write an assembly language program to count number of 1’s in
a byte. Insert a delay of 1 second between each bit check and
display the count at output port F9y in every pass. Clock
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Total Number ofPages1_ —/ 72 — Roll NO....esssee
B.Tech ELECTRICAL /ELECTRIGAL& ELECTRONIGSENGG. 6 SEMESTER,
MID SEMESTER EXAMINATION (March-2019)
EE/EL-306 Microprocessor & Microcontroller Application,
Time: 1:30 Hours Maximum Marks:20
1. Giving reasons explain briefly, why?
[a] Bi-directional Tristate buffers are indispensible for bussed architecture in
microprocessors(/P).
[b] For signed numbers only Arithmetic shift is performed.
[c] Fold back in a memory organization is always avoided.
[4] El and DI instructions are mandatory for the Interrupt routine.
[e] Stack memory is implemented as LIFO type. L
2 [a] Design a memory map with contiguous and sequential memory address
range to each memory chips of 4K, 2K, and 2K capacity without fold back
for-8085 P. Draw a neat diagram and show the range assigned to each
memory chip.
[b] Draw a neat timing diagram with proper labelling of the instruction ‘OUT’
3 [a] Solar insolation data is sampled every 2 minutes from a pyranometer and
stored sequentially for 8 hours of a day. Write an 8085 uP assembly language
program to estimate the time of maximum insolation in a day if the data
stored from location 2200y. 25
[b] Write an 8085juP assembly language program to implement eight sample
moving averaging over a sequence of 100 sampled data (from 20003), working
form first eight samples to last eight samples.
4 Explain how a signed number can be expressed in terms of group of
Describe the basic building of Booths’ algorithm for multiplication of signed
numbers, by explaining the logic and components involved in it, Explain Q15
format for depicting the fractional numbers with an example. Use the
algorithm and Q15 format for developing the multiplication for signed
fractional numbers. Develop the-algorithm in assemble language. Write
detailed comments in support of the algorithm.
Bay
