1
GATE ECE 1991
Subjective
+5
-0
The program given below is run on an 8085 based microcomputer system. Determine the contents of the registers: PC, SP, B, C, H, L after a half instruction is executed.
LOC
2000 START: LXI SP, 1000H
LXI H, 2F37 H
XRA A
MOV A, H
INX H
PUSH H
CZ 20 FF H JMP 3000 H
HLT
20FF ADD H
RZ
POP B
PUSH B
RNZ
HLT
2
GATE ECE 1991
MCQ (Single Correct Answer)
+2
-0.6
In a series RLC high Q circuit, the current peaks at a frequency
A
equal to the resonant frequency
B
greater than the resonant frequency
C
less than the resonant frequency
D
none of the above
3
GATE ECE 1991
MCQ (Single Correct Answer)
+2
-0.6
Two two-port networks are connected in cascade. The combination is to be represented as a single two-port network. The parameters of the network are obtained by multiplying the individual
A
z-parameter matrix
B
h-parameter matrix
C
y-parameter matrix
D
ABCD parameter matrix
4
GATE ECE 1991
MCQ (Single Correct Answer)
+2
-0.6
The necessary and sufficient condition for a rational function of s, T(s) to be driving point impedance of an RC network is that all poles and zeros should be
A
simple and lie on the negative axis in the s-plane
B
complex and lie in the left half of the s-plane
C
complex and lie in the right half of the s-plane
D
simple and lie on the positive real axis of the s-plane
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