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Ece 1

The document contains a series of multiple-choice questions related to electronics and physics concepts. Each question provides four answer options, with the correct answers indicated by an asterisk. Topics covered include ROM capacity, transistor amplifier bias systems, op-amp gain, crystal structures, and circuit behavior.

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kavithakumar87
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7 views2 pages

Ece 1

The document contains a series of multiple-choice questions related to electronics and physics concepts. Each question provides four answer options, with the correct answers indicated by an asterisk. Topics covered include ROM capacity, transistor amplifier bias systems, op-amp gain, crystal structures, and circuit behavior.

Uploaded by

kavithakumar87
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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1.

The bit storage capacity of a Read Only Memory(ROM) with a 512 x 8 organization is
bits.
A. 1024
B. 8192
C. 4096 *
D. 2048

2. The most widely used combination bias system in basic transistor amplifier
A. Limited type
B. Current divider type
C. Voltage-divider type *
D. Base current type

3. The open-loop gain of an op-amp is given at 225,000. Find the gain in dB.
A. 53.5
B. 107 *
C. 535
D. 10.7

4. A is a solid material formed by atoms bonding together in a fixed pattern.


A. Block
B. Crystal *
C. Lattice
D. Pyramid

5. Elements with 5 or more valence electrons are called .


A. Semi-conductors
B. Conductors
C. Molecule
D. Insulators *

6. When the resistance of the load is high with respect to the resistance of the
source in a
circuit is achieved.
A. Maximum power
B. High efficiency
C. Maximum transfer
D. High voltage *

7. As the input voltage varies within specified limits, the zener diode
maintains a nearly constant output voltage across its terminal. This is
called .
A. Auto regulation
B. Specific regulation
C. Line regulation *
D. Load regulation

8. DC biasing is used to establish a steady level of transistor current. This is


called the .
A. Operating coordinates
B. Threshold point
C. Range of operation
D. DC operating point *

9. Find the phase angle between the voltage across and the current through
the circuit when Xc is 25 ohms, R 100 ohms and Xl is 50 ohms.
A. 76 degrees with the voltage leading the current
B. 14 degrees with the voltage lagging the current
C. 14 degrees with the voltage leading the current *
D. 76 degrees with the voltage lagging the current

10. If the resistance of a circuit is doubled and the applied voltage is kept
constant, the current will
.
A. Be quadrupled
B. Remain the same
C. Be cut in half *
D. Be doubled

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