GATE IN 2021 Question Paper (06-Feb-2021) (Shift 1)

A 16-bit microprocessor has twenty address lines (A₀ to A₁₉) and 16 data lines. The higher eight significant lines of the data bus of the processor are tied to the 8-data lines of a 16 Kbyte memory that can store one byte in each of its 16K address locations. The memory chip should map onto contiguous memory locations and occupy only 16 Kbyte of memory space. Which of the following statement(s) is/are correct with respect to the above design?

A single-phase transformer has a magnetizing inductance of 250 mH and a core loss resistance of 300 Ω, referred to primary side. When excited with a 230 V, 50 Hz sinusoidal supply at the primary, the power factor of the input current drawn, with secondary on open circuit, is ____ (rounded off to two decimal places).

Taking N as positive for clockwise encirclement, otherwise negative, the number of encirclements N of (−1, 0) in the Nyquist plot of G(s) = 3/(s -1) is

The diode used in the circuit has a fixed voltage drop of 0.6 V when forward biased. A signal vs is given to the ideal OpAmp as shown. When vs is at its positive peak, the output (vOA) of the OpAmp in volts is _______.

The transistor Q1 has a current gain β1 = 99 and the transistor Q2 has a current gain β2 = 49. The current IB2 in microampere is _______