Mindtree Analytical Paper

1. An expression was given like B + A .B + !A .B + . . . . . and what will
be the final expression o/p :- ( Easy )
2. state diagram was given and what state will be detected ?
3. Counter and three states were given( 13 , 15 , 14 , 10 ) what will be the
next value ? ( ans. 11 – Gray counter )
4. For one circuit inputs are ABCD and output is zero for first eight inputs
and 1 for next eight . What will be the expression for circuit ? ( ans :- A)

5. What is octal representation of 01010101 ? ( ans. 125 )
6. D flip-flop with inverted feedback was given and question was based on
maximum frequency allowed ( setup , hold etc. times were given )
7. Question based on instruction T states and CPI was asked .
8. What happens when HALT instruction is executed? ( Enter wait state and
waits for interrupt or reset , Enters in to sleep state , etc. ( ans. Waits
for interrupt or reset )
9. What happens when PUSH instruction is executed : ( content of accumulator
is saved, content of PC is changed , stack pointer is decremented and value
value is saved )
10. Two bulbs of 40 Watt and 60 Watts were added in series . What will
happen ? ( 40 watt will be brighter , 60 watts will be brighter , both will
have same brightness , none ) ( Ans. 40 watt)
11. If widths of all PMOS an NMOS are doubled in any circuit then what will
be effect on noise margin ? ( ans. No effect)
12. If gate and one end of NMOS are connected to Vdd , what will be the
output at second end of NMOS ? ( Vdd- Vth – NMOS are bad 1 's)
13. a band limited signal is sampled at Nyquist rate , to reconstruct it
the output will be given to : ( RC filter , Envelope detector , LPF with --
)
14. What is expression for Noise figure ? 15. always @ ( B or C) if( B) D=C
Circuit will work as ( Mux, Tri state buffer , Latch , None ) ( Ans. --- Tri
state Buffer)