GATE IN 2017 Question Paper (12-Feb-2017) (Shift 2)

The figure shows a phase locked loop. The output frequency is locked at f₀ = 5 kHz. The value of fᵢ in kHz is ___________.

The condition for oscillation in a feedback oscillator circuit is that at the frequency of oscillation, initially the loop gain is greater than unity while the total phase shift around the loop in degree is

The output V${}_O$ shown in the figure, in volt, is close to

An 8-bit microcontroller with 16 address lines has 3 fixed interrupts i.e., Int1, Int2 and Int3 with corresponding interrupt vector addresses as 0008H, 0010H and 0018H. To execute a 32-byte long Interrupt Service Subroutine for Int1 starting at the address ISS1, the location 0008H onwards should ideally contain

A and B are the logical inputs and X is the logical output shown in the figure. The output X is related to A and B by