100. According to the algebra of logic, (A+ -A- ) equals

A. A

B. I

C.0

D. AA

101. According to the absorptive Laws of Boolean algebra, expression in (A + AB) equals

A. A

B. B

C.AB

D. A

102. When we demogranize A B ,we get

A. AB

B. X +

C. A + B

D. AB

103. The dual of the statement (A + 1) = 1 is

A.A . 1 =A

B.A.0=0

C.A+A=A

D.A . A = 1

104. The expression ABC can be simplified to

A. A . B

B.AB + BC + CA

C.AB +

D.( d) -A- + 73- +

105. While obtaining minimal sum-ofproducts expression,

A. all don't cares are ignored

B. all don't cares are treated as logic Is

C. all don't cares are treated as logic Os

D. only such don't cares that aid minimization are treated as logic Is

106. In a saturated bipolar logic circuit, transistor operate

A. in deep cut-off

B. over active region

C. in saturation

D. just short of saturation

Page **15** of **56**