# Recent questions tagged isro2012-ece

1
Person X can solve 80% of the ISRO question paper and Person Y can solve 60%. The probability that at least one of them will solve a problem from the question paper, selected at random is : a. 0.48 b. 0.70 c. 0.88 d. 0.92
2
a) 0 & 1 b) 1 & 2 c) 1 & 4 d) None of these
3
The Eigen values of matrix are: a) ± cos∝ b) ± sin ∝ c) tan ∝ & cot ∝ d) cos ∝ ± sin ∝
4
The area bounded by the curves $y^2 =x, y=x$ is given by a. 2/3 b. 1/2 c. 1/6 d. 1/3
5
a) 1-x b) (1-x)/x c)1/x d)x/(1-x)
6
The system of equations x + y + z = 6, 2x + y + z = 7, x + 2 y + z = 8 has a. A unique solution b. No solution c. An infinite number of solutions d. None of these
7
Principle of "locality" is used in context of a. Addressing lowest Memory address by microprocessor b. Addressing Highest Memory.address by microprocessor c. Accessing Cache memory locations. d. None of above.
8
"Cycle Stealing" in microprocessor parlance refers to a. Special type of DMA access by an external device b. RESET operation at power ON by microprocessor c. Interrupt Acknowledge cycle d. none of above.
9
The complement Accumulator (CMA) instruction in 8085 processor on execution affects a)Zero flag b) Sign flag c) Overflow flag d) none of the above
1 vote
10
The register in 8085 that is used to keep track of the memory address of the next opcode to be run in the program is the: a) Stack Pointer b) Program Counter c) Accumulator d) Non of the above
11
The number of comparators needed in a 8 bit flash type ADC is: a) 8 b) 16 c) 255 d) 256
12
The truth table for implementing a Boolean variable $\text{F}$ is given where $\text{d}$ represents don't care states. The minimized expression for $\text{F}$ is: BC' +AC'+AB AB+ C' A'BC'+ AB'C'+ABC None of the above
If $(146)_x + (313) _{x-2} = (246)_ 8$ then the value of $x$ will be a) 5 b) 6 c) 7 d) 9
Following constellation diagram represents: $16$ PSK $16$ QAM $16$ APSK All the above