1
GATE ECE 2002
MCQ (Single Correct Answer)
+1
-0.3
The intrinsic carrier concentration of silicon sample at 300oK is $$1.5\times10^{16}/m^3$$. If after doping, the number of majority carriers is $$5\times10^{20}/m^3$$ , minority carrier density is
A
$$4.50\times10^{11}/m^3$$
B
$$3.33\times10^4/m^3$$
C
$$5.00\times10^{20}/m^3$$
D
$$3.00\times10^{-5}/m^3$$
2
GATE ECE 2002
MCQ (Single Correct Answer)
+1
-0.3
If the transistor in Figure is in saturation, then GATE ECE 2002 Electronic Devices and VLSI - BJT and FET Question 21 English
A
IC is always equal to bdcIB
B
IC is always equal to -bdcIB
C
IC is greater than or equal to bdcIB
D
IC is less than bdcIB
3
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
The contents of Register (B) and Accumulator (A) of 8085 microprocessor are 49H and 3AH respectively. The contents of A and the status of carry flag (CY) and sign flag (S) after executing SUB B instructions are
A
A = F1, CY = 1, S =1
B
A = 0F, CY = 1, S =1
C
A = F0, CY = 0, S =0
D
A = 1F, CY = 1, S =1
4
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
Consider the following assembly language program. GATE ECE 2002 Microprocessors - Instruction Set and Programming with 8085 Question 18 English The execution of the above program in an 8085 microprocessor will result in
A
an output of 87H at port 1
B
an output of 87H at port 2
C
infinite looping of the program execution with accumulator data remaining at 00H.
D
infinite looping of the program execution with accumulator data alternating between 00H and 87H
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