(Download) GATE Instrumentation Engineer Solved Paper 2010

1.A beam of unpolarized light is first passed through a linear polarizer and then through a quarter-wave plate. The emergent beam is
(A) unpolarized (B) linearly polarized
(C) circularly polarized (D) elliptically polarized

2.A signal with frequency components 50Hz, 100Hz and 200Hz only is sampled at 150samples/s. The ideally reconstructed signal will have frequency component(s) of
(A) 50Hz only (B) 75Hz only
(C) 50Hz and 75Hz (D) 50Hz, 75Hz and 100Hz
3. The subroutine SBX given below is executed by an 8085 processor. The value in the accumulator immediately after the execution of the subroutine will be:
SBX : MVI A, 99h
ADI 11h
MOV C,A
RET
(A) 00h (B) 11h (C) 99h (D) AAh

4.H(z) is a discrete rational transfer function. To ensure that both H(z) and its inverse are stable its
(A) poles must be inside the unit circle and zeros must be outside the unit circle
(B) poles and zeros must be inside the unit circle
(C) poles and zeros must be outside the unit circle
(D) poles must be outside the unit circle and zeros should be inside the unit circle

5. The output voltage of a transducer with an output resistance of 10kΩ is connected to an amplifier. The minimum input resistance of the amplifier so thathe error in recording the transducer output does not exceed 2% is
(A) 10kΩ (B) 49kΩ (C) 490kΩ (D) 1.2MΩ