try 3 best

Year 1997 : Paper 1

1. If the energy gap of semiconductor is 1.1 eV, then it would be -
a. Opaque to the visible light
b. Transparent to the visible light
c. Transparent to the ultraviolet radiation
d. Opaque to the infrared radiation

2. The skin depth of copper is found to be 66 um at 1 MHz at a certain temperature. At the same temperature and at 2 MHz, the skin depth would be approximately -
a. 47 μm
b. 33 μm
c. 92 μm
d. 122 μm

3. With increasing temperature, the electrical conductivity would
a. Increase in metals as well as in intrinsic semiconductors
b. Increase in metals but decrease in intrinsic semiconductors
c. Decrease in metals but increase in intrinsic semiconductors
d. Decrease in metals as well as in intrinsic semiconductors

4. Which one of the following statements is correct?
a. All electrostrictive materials are piezoelectric, and all piezoelectric materials are electrostrictive
b. Piezoelectric materials are a subset of electrostrictive materials
c. Electrostrictive materials are a subset of piezoelectric materials
d. Piezoelectricity and electrostriction are two totally independent properties of materials

5. Ferrites have
a. Low copper loss
b. Low eddy current loss
c. Low resistively
d. Higher specific gravity compared to iron

Year 1997 : Paper 2

6. If α = 0.995, Ie = 10mA and Icbo = 0.5μA then Iceo will be -
a. 25 μA
b. 100 μA
c. 10.1 μA
d. 10.5 μA

7. The approximate value of input impedance of a common emitter amplifier with emitter resistance R is given by
a. β + ARe
b. (β + 1)Re + hie
c. hie
d. (β + 1)Re

8.The circuit diagram shown in the figure consists of transistors in:

a. Parallel connection
b. Cascode connection
c. Darlington connection
d. Cascade connection

9. If an amplifier with gain of -1000 and feedback of β = -0.1 had again change of 20% due to temperature, the change in gain of the feedback amplifier would be -
a. 10%
b. 5%
c. 0.2%
d. 0.01%

10. In the case of the circuit shown in the figure, Vio = 10 mV dc maximum, the maximum possible output offset voltage Voo caused by the input off set voltage Vio with respect to ground is -

a. 60 mV dc
b. 110 mV dc
c. 130 mV dc
d. 150 mV dc

General Ability Test

11. During whose tenure was the first session of Indian National Congress held?
a. Lord Curzon
b. Lord Dufferin
c. Lord Lytton
d. Lord Ripon

12. Which one of the following is the correct chronological order?
a. Champaran Satyagraha — Moplah Rebellion- Jallianwala Bagh Massacre
b. Champaran Satyagraha — Jallianwala Bagh Massacre — Moplah Rebellion
c. Jallianwala Bagh Massacre Champaran Satyagraha — Moplah Rebellion
d. Jallianwala Bagh Massacre — Moplah Rebellion— Champaran Satyagraha

13. Who founded the India House in England during the Indian freedom struggle?
a. Bhikaji Cama
b. Dadabhai Naoroji
c. Ras Bihari Bose
d. Shyamiji Krishna Verma

14. Which one of the following is the correct chronological order?
a. Nasik Conspiracy — Kokori Conspiracy — Lahore Conspiracy
b. Lahore Conspiracy — Nasik Conspiracy— Kakori Conspiracy
c. Nasik Conspiracy —Lahore Conspiracy- Kakori
d. Lahore Conspiracy—Kakori Conspiracy —Nasik Conspiracy

15. Prime Minister Manmohan Singh attended the BIMST-EC Meeting in Bangkok in July 2004 in his maiden overseas engagement after assuming the office of Prime Minister of India . Which of the following is not a member of BIMST-EC?
a. Bangladesh
b. Maldives
c. Thailand
d. Sri Lanka

Score =

Correct Answer: