A Best Way To Crack Gorenment Job Exams

Electronics Engineering Objective Questions { Digital Circuit and Microprocessor }

78. In positive logic, logic state 1 corresponds to
A. positive yoltage
B. higher voltage level
C. zero voltage level
D. lower voltage level
Discuss in Forum

79. In negative logic, the logic state 1 corresponds to
A. negative voltage
B. zero voltage
C. more negative voltage
D. lower voltage level
Discuss in Forum

80. The voltage levels of a negative logic system
A. must necessarily be negative
B. may be negative or positive
C. must necessarily be positive
D. must necessarily be OV and ?5V
Discuss in Forum

81. The output of a 2-input OR gate is zero only when its
A. both inputs are 0
B. either input is 1
C. both inputs are 1
D. either input is 0
Discuss in Forum

82.  An XOR gate produces an output only when its two inputs are
A. high
B. low
C. different
D. same
Discuss in Forum

83. An AND gate
A. implements logic addition
B. is equivalent to a series switching circuit
C. is an any-or-all gate
D. is equivalent to a parallel switching circuit
Discuss in Forum

84. When an input electrical signal A = 10100 is applied to a NOT gate, its output signal is
Discuss in Forum

Page 12 of 56

« 10 11  12  1314 »