EC GATE 2010 - Online Test
Q1. Modern warfare has changed from large scale clashes of armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare; and regretfully, there exist people in military establishments who think that chemical agents are useful tools for their cause. Which of the following statements best sums up the meaning of the above passage:
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. Which of the following options is closest in meaning to the world below:
Answer : Option B
Explaination / Solution:
Circuitous means round about or not direct. Indirect is closest in meaning to this circuitous
(A) Cyclic : Recurring in nature
(B) Indirect : Not direct
(C) Confusing : lacking clarity of meaning
(D) Crooked : set at an angle; not straight
Q3. The question below consists of a pair of related words followed by four pairs of words. Select the pair that best expresses the relation in the original pair.
Unemployed: Worker
Answer : Option B
Explaination / Solution:
A worker may by unemployed. Like in same relation a sleeper may be unaware.
Q4. Choose the most appropriate word from the options given below to complete the following sentence;
If we manage to ____ our natural resources, we would leave a better planet for our children.
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. Choose the most appropriate word from the options given below to complete the following sentence:
His rather casual remarks on politics ___ his lack of seriousness about the subject
Answer : Option C
Explaination / Solution:
Betrayed means reveal unintentionally that is most appropriate.
Q6.
The electric field component of a time harmonic plane EM wave traveling in a nonmagnetic lossless dielectric medium has an amplitude of 1 V/m. If the relative permittivity of the medium is 4, the magnitude of the time-average power density vector (in W/m2) is
Answer : Option C
Explaination / Solution:
Intrinsic impedance of EM wave
Time average power density
Q7. A plane wave having the electric field components 
V/m and traveling in free space is incident normally on a lossless medium with 
which occupies the region y ≥ 0. The reflected magnetic field component is given by
V/m and traveling in free space is incident normally on a lossless medium with which occupies the region y ≥ 0. The reflected magnetic field component is given by
Answer : Option A
Explaination / Solution:
In the given problem
Reflection coefficient
negative So magnetic field component does not change its direction Direction of incident magnetic field
So, reflection magnetic field component
Q8. At room temperature, a possible value for the mobility of electrons in the inversion layer of a silicon n-channel MOSFET is
Answer : Option A
Explaination / Solution:
At room temperature mobility of electrons for Si sample is given μn = 1350 cm2/V-s For an n-channel MOSFET to create an inversion layer of electrons, a large positive gate voltage is to be applied. Therefore, induced electric field increases and mobility decreases.
So, Mobility μn <1350 cm2/V-s for n-channel MOSFET
Q9. 
The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T = 300 K electronic charge = 1.6 × 10-19 C, thermal voltage = 26 mV and electron mobility = 1350 cm2 / V-s
The magnitude of the electric field at x = 0.5 μm is
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. Thin gate oxide in a CMOS process in preferably grown using
Answer : Option B
Explaination / Solution:
Dry oxidation is used to achieve high quality oxide growth.
