Canarys Placement Paper 2

Canarys Placement Paper :- 

Electronics:

1. 8254 counter :
down ctr
up “
up-down “
programmable”

2.an x bit processor is defined by
a.prog ctr size
b.address bits
c.ale signal
d.none of the above

ans..d

3. A bjt in cb mode is
a. power ampl.
b. current “
c. voltage ampl.
d. power / current “

4. find odd one:
z 80
8085
8086
8088

ans: 8086 (16 bit)

6. if a has 33 1/2 % richer than B , B is less than A by.

a.16 1/3 b.27 c. 38 d. 42

7. 10% of an officer deducted for hr, 15% rent, 20% of the rest for savings, n remaining for ….. that is equal to 1431… find the total amt…(RS AGG)

8. If M min spent on each sub n there r s subjects , time spent in am hour in all is ..

a.1/MS b. 60/MS c. 60M/s d. MS/60

ans: b.

9. Area of |————|
b | |
|____________|__
b
i have jus tried to make a fig.. i hope u got it a rect attached with a triangle find area ..
ans : a*b+ 1/2 *b*b
=b(a+b/2) sq.meters

10.. match..
a. interrupt 1> I/O device

b. hold 2>memory

c. wait 3> DMA ctroller

ans: a-1 , b - 3, c - 2

12.PPI is: 8255

13.Keypad ctroller is 8279

14. Darlington pair is used to
A) Increase beta factor and dec I/p resistance
B) Increase beta factor and inc I/p resistance
C) Increase beta factor and dec o/p resistance
D) Increase beta factor and inc o/p resistance

15.Which instn does not affect z flag?

A) inc b    B  dcr b    C inx b      D dcx b