Liquid Propulsion System Centre, Indian Space Research Organisation Technical Assistant Electronics Paper 2016

The 16 bit flag of 8086 microprocessor is responsible to indicate
(a) Condition of result of ALU operation
(b) Condition of memory
(c) Result of addition
(d) Result of substraction

Which method bypasses the CPU for certain types of data transfer?
(a) Software interrupts
(b) Interrupt-driven I/O
(c) Polled I/O
(d) Direct memory access (DMA)

In 8086, example of non maskable interrupts is
(a) TRAP
(b) RST6.5
(c) INTR
(d) RST6.6

The total external data memory that can be interfaced to the 8051 is
(a) 32 K
(b) 64 K
(c) 128 K
(d) 256 K

The 8051 can handle ______ interrupt sources.
(a) 3
(b) 4
(c) 6
(d) 5

Which of the following instructions will move the contents of register 3 to the accumulator?
(a) MOV A, R3
(b) MOV R3, A
(c) MOV 3R, A
(d) MOV A, 3R

A megger is a device used for measuring
(a) Extremely high voltages
(b) Extremely high currents
(c) Extremely high resistance
(d) All of the above

An ammeter of 0-25 A range has a guranteed accuracy of 1% of full scale reading. The current measured is 5A. The limiting error is
(a) 2%
(b) 2.5%
(c) 4%
(d) 5%

All induction type transducers are based on
(a) Faraday’s law
(b) Ohm’s law
(c) Seebeck effect
(d) peltier effect

A digital voltmeter has a read out range from 0 to 9999 counts. If the full scale reading is 9.999 V, the resolution is
(a) 1 V
(b) 0.01 V
(c) 1 milli V
(d) 1 micro V