Hello, here I m providing you the paper of the GATE exam hold by the IIT Mumbai as under:

Which one of the following flight instruments is used on an aircraft to determine its attitude in
flight?
(A) Vertical speed indicator
(B) Altimeter
(C) Artificial Horizon
(D) Turn-bank indicator

A supersonic airplane is expected to fly at both subsonic and supersonic speeds during its whole
flight course. Which one of the following statements is TRUE?
(A) Airplane will experience less stability in pitch at supersonic speeds than at subsonic speeds
(B) Airplane will feel no change in pitch stability
(C) Airplane will experience more stability in pitch at supersonic speeds than at subsonic speeds
(D) Pitch stability cannot be inferred from the information given

Which one of the following is favorable for an airplane operation?
(A) Tail wind in cruise and head wind in landing
(B) Tail wind both in cruise and landing
(C) Head wind both in cruise and landing
(D) Head wind in cruise and tail wind in landing

Which one of the following is TRUE with respect to Phugoid mode of an aircraft?
(A) Frequency is directly proportional to flight speed
(B) Frequency is inversely proportional to flight speed
(C) Frequency is directly proportional to the square root of flight speed
(D) Frequency is inversely proportional to the square root of flight speed

Which one of the following statements is NOT TRUE for a supersonic flow?
(A) Over a gradual expansion, entropy remains constant
(B) Over a sharp expansion corner, entropy can increase
(C) Over a gradual compression, entropy can remain constant
(D) Over a sharp compression corner, entropy increases

The critical Mach number for a flat plate of zero thickness, at zero angle of attack, is _________

A damped single degree-of-freedom system is vibrating under a harmonic excitation with an
amplitude ratio of 2.5 at resonance. The damping ratio of the system is ______________

Consider two engines P and Q. In P, the high pressure turbine blades are cooled with a bleed of 5%
from the compressor after the compression process and in Q the turbine blades are not cooled.
Comparing engine P with engine Q, which one of the following is NOT TRUE?
(A) Turbine inlet temperature is higher for engine P
(B) Specific thrust is higher for engine P
(C) Compressor work is the same for both P and Q
(D) Fuel flow rate is lower for engine P

An amplifier with resistive negative feedback has two left half-plane poles in its
open-loop transfer function. The amplifier
(a) will always be unstable at high frequencies
(b) will be stable for all frequencies
(c) may be unstable, depending on the feedback factor
(d) will oscillate at low frequencies

An 8 bit successive approximation analog to digital converter has full scale
reading of 2.55 V and its conversion time for an analog input of 1V is 20µs. The
conversion for a 2V input will be
(a) 10 µs (b) 20 µs (c) 40 µs (d) 50 µs

The number of hardware interrupts (which require an external signal to interrupt)
present in an 8085 microprocessor are
(a) 1 (b) 4 (c) 5 (d) 13

The most commonly used amplifier in sample and hold circuits is
(a) a unity gain inverting amplifier
(b) a unity gain non-inverting amplifier
(c) an inverting amplifier with a gain of 10
(d) an inverting amplifier with a gain of 100

A TEM wave is incident normally upon a perfect conductor. The E and H fields at
the boundary will be, respectively.
(a) minimum and minimum (b) maximum and maximum
(c) minimum and maximum (d) maximum and minimum

The frequency range for satellite communication is
(a) 1 KHz to 100 KHz (b) 100 KHz to 10 KHz
(c) 10 MHz to 30 MHz (d) 1 GHz to 30 GHz