2-EC-IES-Objective paper-II-2012

88 statement i in a transistor designed to be used

Info icon This preview shows pages 12–14. Sign up to view the full content.

88. Statement (I) : In a transistor designed to be used for power amplification, the collector size is largest relative to the emitter and base. Statement (II) : The collector is connected to the body of the transistor and hence to a heat sink for heat dissipation to be effective. 89. Statement (I) : The carry look-ahead adder is a fast adder Statement (II) : The carry look-ahead adder generates the carry and the sum digits directly.
Image of page 12

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

EC- Objective Paper-II IES-2012 cusp India’s No.1 institute for GATE Training cusp 1 Lakh+ Students trained till date cusp 65+ Centers across India 291 90. Statement (I) : Root loci are symmetrical with respect to real axis of the s-plane. Statement (II) : Root loci are normally symmetrical with respect to the perpendicular axis of symmetry of the pole-zero combination of the loop transfer function. 91. Statement (I) : Nyquist criterion is a powerful tool to determine stability of a closed loop system using open loop transfer function. Statement (II) : Nyquist criterion relates the locations of poles and zeros of the closed loop transfer function. 92. Statement (I) : A second order system subjected to a unit impulse oscillates at its natural frequency. Statement (II) : Impulse input contains frequencies from to -∞ + ∞ . 93. Statement (I) : All the systems which exhibit overshoot in transient response will also exhibit resonance peak in frequency response. Statement (II) : A large resonance peak in frequency response corresponds to a large overshoot in transient response. 94. Statement (I) : In a prototype second order system the rise time t r and bandwidth are inversely proportional. Statement (II) : Increasing n n ω increases bandwidth while t r reduces. 95. Statement (I) : The phase angle plot in Bode diagram is not affected by the variation in open loop gain of the system. Statement (II) : The variation in gain of the system has no effect on the phase margin. 96. Statement (I) : FM spectrum consists of a carrier and an infinite number of side band components. Statement (II) : FM signals are used only in TV transmission to ensure better picture quality. 97. Statement (I) : In the two body system consisting of the earth and a satellite, centre of mass always coincides with centre of the earth. Statement (II) : Mass of earth is much greater than mass of satellite. 98. Statement (I) : Gunn effect device is a slice made from n-doped GaAs and provides negative resistance characteristics. Statement (II) : GaAs has an empty energy band higher in energy than the filled or partly filled bands. 99. Statement (I) : Power output of the lowest mode in a reflex klystron is maximum. Statement (II) : Lower modes occur at higher repeller voltages where the acceleration of bunched electrons on return is maximum. 100. Statement (I) : The DMA technique is more efficient than the Interrupt-driven technique for high volume I/O data transfer. Statement (II) : The DMA technique does not make use of the Interrupt mechanism.
Image of page 13
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.
  • Winter '17
  • ritesh o
  • No.1 institute, Lakh+ Students, GATE Training

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern