PG TRB COMPUTER INSTRUCTOR GRADE 1 STUDY MATERIAL - 10 - THAMIZHKADAL.IN

Post Top Ad

Monday, September 27, 2021

PG TRB COMPUTER INSTRUCTOR GRADE 1 STUDY MATERIAL - 10

1. Which of the following is non-saturating?

A.  TTL

B.  CMOS

C. ECL

D.  Both 1 and 2

2. The number of digits in octal system is .........

A.  8

B.  7

C.  9

D.  10

3. The access time of a word In 4 MB main memory is 100 ms. The access time of a word in a 32 kb data cache memory is 10 ns. The average data cache bit ratio is 0.95. The efficiency of memory access time is .........

A.  9.5 ns

B.  14.5 ns

C.  20 ns

D.  95 ns

4.The expression Y = pM (0, 1, 3, 4) is ..............

A.  POS

B.  SOP

C.  Hybrid

D.  none of these

5. An 8 bit DAC has a full scale output of 2 mA and full scale error of ± 0.5%. If input is 10000000 the range of outputs is .............

A.  994 to 1014 μA

B.  990 to 1020 μA

C.  800 to 1200 μA

D.  None of the above

6. Decimal 43 in hexadecimal and BCD number system is respectively....... and ........

A.  B2 and 01000011

B.  2B and 01000011

C.  2B and 00110100

D.  B2 and 01000100

7. An AND gate has two inputs A and B and one inhibit input 3, Output is 1 if

A.  A = 1, B = 1, S = 1

B.  A = 1, B = 1, S = 0

C.  A = 1, B = 0, S = 1

D.  A = 1, B = 0, S = 0

8. The greatest negative number which can be stored is 8 bit computer using 2’s complement arithmetic is ........

A.  -256

B.  -128

C.  -255

 D.  -127

9. A JK flip flop has tpd= 12 ns. The largest modulus of a ripple counter using these flip flops and operating at 10 MHz is ........

A.  16

B.  64

C.  128

D.  256

10. The basic storage element in a digital system is .............

A.  flipflop

B.  counter

C.  multiplexer

D.  encoder

No comments:

Post a Comment

THAMIZHKADAL STUDY MATERIAL

கிழே உள்ள தலைப்பை தொடவும்

FOLLOW THE THAMIZHKADAL WEBSITES
WWW.THAMIZHKADAL.COM
EXAM STUDY MATERIAL ONLINE TEST VIDEO MATERIAL
TEXT BOOK CLICK VIEW ATTEND CLICK VIEW
இலக்கிய வரலாறு CLICK VIEW ATTEND CLICK VIEW
GK CLICK VIEW ATTEND CLICK VIEW
CURRENT AFFAIRS CLICK VIEW ATTEND CLICK VIEW
TNPSC CLICK VIEW ATTEND CLICK VIEW
TET CLICK VIEW ATTEND CLICK VIEW
PG TRB CLICK VIEW ATTEND CLICK VIEW
POLICE CLICK VIEW ATTEND CLICK VIEW
NEET CLICK VIEW ATTEND CLICK VIEW
TELENT EXAM NMMS TRUST NTSE
TK WEBSITES THAMIZHKADAL.COM THAMIZHKADAL.IN STUDY MATERIALS

©THAMIZHKADAL

Post Top Ad