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91
ISRO 2009-ECE Matrices
Evaluate A3 - 6A2 + 11 A -10I a) Null matrix b) Identity matrix c) -4I d) None of the above
Evaluate A3 - 6A2 + 11 A -10Ia) Null matrixb) Identity matrixc) -4Id) None of the above
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92
ISRO 2009-ECE MOD Counter
A certain JK FF has $t_{pd}$=12 ns. The largest MOD counter that can be constructed from such FFs and still operate up to 10 MHz is a) 16 b) 256 c) 8 d) 128
A certain JK FF has $t_{pd}$=12 ns. The largest MOD counter that can be constructed from such FFs and still operate up to 10 MHz isa) 16b) 256c) 8d) 128
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93
ISRO 2009- ECE Computer Architecture
Consider the following program for 8085 XRA A LXI B, 0007H LOOP : DCX B JNZ LOOP The loop will be executed a) 8 times b) once c) 7 times d) infinite times
Consider the following program for 8085 XRA A LXI B, 0007HLOOP : DCX B JNZ LOOPThe loop will be executeda) 8 timesb) on...
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94
ISRO 2010-ECE Continuity in functions
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95
ISRO 2010- ECE Huffman code length
A zero memory source emits six messages with probabilities 0.3, 0.25, 0.15, 0.12, 0.1 and 0.08. If binary Huffman coding is used, what will be the average code length? a) 2.45 bits b) 3.45 bits c) 2.54 bits d) 3.54 bits
A zero memory source emits six messages with probabilities 0.3, 0.25, 0.15, 0.12, 0.1 and 0.08. If binary Huffman coding is used, what will be the average code length?a) ...
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97
ISRO 2010-ECE Cache memory
A microprocessor has a cache memory with access time of 2 ns and a main memory with access time of 10 ns. If the cache miss ratio is 0.6, what is the average memory access time? a) 6.8 ns b) 6 ns c) 5.2 ns d) 12 ns
A microprocessor has a cache memory with access time of 2 ns and a main memory with access time of 10 ns. If the cache miss ratio is 0.6, what is the average memory acces...
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98
ISRO 2010-ECE Calculus
What does the following integral evaluate to? a) 5 π /16 b) 5 π /8 c) 0 d) 5 π /32
What does the following integral evaluate to?a) 5 π /16b) 5 π /8c) 0d) 5 π /32
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1 votes
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99
ISRO 2010-ECE Shift register
Given shift register is initially loaded with the bit pattern "1010". After how many clock cycles will the content of shift register be "1010" again? a) 5 b) 9 c) 7 d) 15
Given shift register is initially loaded with the bit pattern "1010". After how many clock cycles will the content of shift register be "1010" again?a) 5b) 9c) 7d) 15
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100
ISRO 2010-ECE Digital logic
What is the maximum clock frequency at the given circuit can be operated without timing violations? Assume that the Combinational logic delay is 10 ns and the clock duty cycle varies from 40% to 60 %. a) 100 MHz b) 50 MHz c) 40 MHz d) 25 MHz
What is the maximum clock frequency at the given circuit can be operated without timing violations? Assume that the Combinational logic delay is 10 ns and the clock duty ...
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102
ISRO 2010-ECE matrices
If every minor of order 'r' of a matrix 'A' is zero, then rank of 'A' is a) greater than 'r' b) equal to 'r' c) less than or equal to 'r' d) less than 'r'
If every minor of order 'r' of a matrix 'A' is zero, then rank of 'A' isa) greater than 'r'b) equal to 'r'c) less than or equal to 'r'd) less than 'r'
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103
ISRO 2011- ECE Linear algebra
The value of x at which y has a minimum for $y = x^2 -3x + 1$ is a. -3/2 b. 3/2 c. 0 d. None of these
The value of x at which y has a minimum for $y = x^2 -3x + 1$ isa. -3/2b. 3/2c. 0d. None of these
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104
ISRO 2011-ECE Stack
In what order the elements of a pushdown stack are accessed? a. First In-First Out (FIFO) b. Last In Last Out (LILO) c. Last In First Out (LIFO) d. None of the above
In what order the elements of a pushdown stack are accessed?a. First In-First Out (FIFO)b. Last In Last Out (LILO)c. Last In First Out (LIFO)d. None of the above
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105
ISRO 2011-ECE Mathematics
(cos 5 ϴ — i sin 5 ϴ )$ ^2$ is same as: a. cos 10 ϴ + i sin 10 ϴ b. cos 25 ϴ - sin 25 ϴ c. (cos ϴ + i sin ϴ )$^ {-10}$ d. (cos ϴ - i sin ϴ )$^{-10}$
(cos 5 ϴ — i sin 5 ϴ )$ ^2$ is same as:a. cos 10 ϴ + i sin 10 ϴb. cos 25 ϴ - sin 25 ϴc. (cos ϴ + i sin ϴ )$^ {-10}$d. (cos ϴ - i sin ϴ )$^{-10}$
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106
ISRO 2011-ECE Operating system
In a real time system, the simplest scheme that allows the operating system to allocate memory to two processes simultaneously is _____ a. Over lays b. Pipeline c. Swapping d. None of the above
In a real time system, the simplest scheme that allows the operating system to allocate memory to two processes simultaneously is _____a. Over laysb. Pipelinec. Swapping...
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107
ISRO 2011-ECE : Complex Numbers
(3 + i)/(5 + 5i) is same as a. (2 - i)/5 b. 3 - i c. 5 - 5i d. (2 + i)/5
(3 + i)/(5 + 5i) is same asa. (2 - i)/5b. 3 - ic. 5 - 5id. (2 + i)/5
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108
ISRO 2011-ECE Operating System
A run-time stack cannot be used in a round-robin scheduling system because of the _______ nature of scheduling. a. LIFO (Last in First out) b. FIFO ( First in First out) c. FILO (First in Last out) d. None of the above
A run-time stack cannot be used in a round-robin scheduling system because of the _______ nature of scheduling.a. LIFO (Last in First out)b. FIFO ( First in First out)c. ...
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109
ISRO 2011- ECE Digital Logic
________ has the maximum fan out capacity a. MOS b. CMOS c. ECL d. RTL
________ has the maximum fan out capacitya. MOSb. CMOSc. ECLd. RTL
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110
ISRO 2011- ECE Computer networks
_________ is used to describe the light gathering or light collecting ability of an optical fiber a. Critical angle b. Cut-off wavelength c. Numerical Aperture d. Acceptance angle
_________ is used to describe the light gathering or light collecting ability of an optical fibera. Critical angleb. Cut-off wavelengthc. Numerical Apertured. Acceptance ...
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112
ISRO 2011-ECE Computer networks
For a fast communication which of the following requirements have to be met a. Large bandwidth b. High S/N ratio c. High channel capacity d. None of the above
For a fast communication which of the following requirements have to be meta. Large bandwidthb. High S/N ratioc. High channel capacityd. None of the above
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113
ISRO 2011-ECE Computer networks
In phase modulated signal, the frequency deviation is proportional to a. Frequency only b. Amplitude only c. Both (a) and (b) d. none of the above
In phase modulated signal, the frequency deviation is proportional toa. Frequency onlyb. Amplitude onlyc. Both (a) and (b)d. none of the above
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114
ISRO 2011-ECE Mathematics
a) 3/2 b) 2/3 c) 8/9 d) 8/13
a) 3/2b) 2/3c) 8/9d) 8/13
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115
ISRO 2011-ECE Computer Architecture
When a microprocessor interfaces with a peripheral or memory device, the normal timing of the microprocessor may need to be altered by introducing____ a. Latching b. Wait states c. Tristate logics d. None of the above
When a microprocessor interfaces with a peripheral or memory device, the normal timing of the microprocessor may need to be altered by introducing____a. Latchingb. Wait s...
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117
ISRO 2011- ECE Digital Logic
The function of a strobe function in digital system is a. To reset memory register. b. To check the functioning of a logic gate c. To avoid race problem d. To tri-state the output of the register
The function of a strobe function in digital system isa. To reset memory register.b. To check the functioning of a logic gatec. To avoid race problemd. To tri-state the o...
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118
ISRO 2011-ECE Computer Networks
Go-stationary satellites are placed in equatorial orbits at the height approximately a. 1000 km b. 15000 km c. 25000 km d. 36000 km
Go-stationary satellites are placed in equatorial orbits at the height approximatelya. 1000 kmb. 15000 kmc. 25000 kmd. 36000 km
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2 answers
119
ISRO 2011-ECE Computer networks
The bandwidth of a 'N' bit binary coded PCM signal for modulating a signal having bandwidth of f Hz is a. f/N Hz. b. f c. Nf d. N
The bandwidth of a 'N' bit binary coded PCM signal for modulating a signal having bandwidth of f Hz isa. f/N Hz.b. fc. Nfd. N
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