Explore topic-wise MCQs in Digital Circuits.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

What is a sense amplifier?

A. It is an amplifier which converts ac current into dc current
B. It is an amplifier which lowers the input voltage
C. It is an amplifier which increases the input voltage
D. It is an amplifier which converts the low voltage to a sufficient voltage
Answer» E.
Discussion
2.

An address multiplexing in DRAM is of _____ bits.

A. 10240
B. 15289
C. 16384
D. 17654
Answer» D. 17654
Discussion
3.

Why do a DRAM employ the address multiplexing technique?

A. To reduce the number of memory locations
B. To increase the number of memory locations
C. To reduce the number of address lines
D. To increase the number of address lines
Answer» D. To increase the number of address lines
Discussion
4.

Which characteristic of RAM memory makes it not suitable for permanent storage?

A. Unreliable
B. Too slow
C. Too bulky
D. It is volatile
Answer» E.
Discussion
5.

Cache memory acts between __________

A. RAM and ROM
B. CPU and RAM
C. CPU and Hard Disk
D. CPU and ROM
Answer» C. CPU and Hard Disk
Discussion
6.

Dynamic RAM is used as main memory in a computer system as __________

A. It has a lower cell density
B. It needs refreshing circuitry
C. Consumes less power
D. Has higher speed
Answer» E.
Discussion
7.

Virtual memory consists of __________

A. SRAM
B. DRAM
C. Magnetic memory
D. Main Memory
Answer» B. DRAM
Discussion
8.

The main memory of a PC is made of __________

A. Cache
B. Dynamic RAM
C. Static RAM
D. Both cache and dynamic RAM
Answer» E.
Discussion
9.

The dynamic RAM offers __________

A. High power consumption, large storage capacity
B. Reduced power consumption, large storage capacity
C. Reduced power consumption, short storage capacity
D. High power consumption, short storage capacity
Answer» C. Reduced power consumption, short storage capacity
Discussion
10.

What is the disadvantage of MOS capacitor in DRAM?

A. It can t hold the data till a long period
B. It doesn t holds the charge till a long period
C. It is highly densed
D. It is not flexible
Answer» C. It is highly densed
Discussion
11.

DRAM uses of integrated MOS capacitors as _______ instead of a flip-flop.

A. Storage cell
B. Memory cell
C. Dynamic cell
D. Static cell
Answer» C. Dynamic cell
Discussion
12.

Most modern operating systems employ a method of extending RAM capacity, known as __________

A. Magnetic memory
B. Virtual memory
C. Storage memory
D. Static memory
Answer» C. Storage memory
Discussion
13.

The DRAM stores its binary information on __________

A. MOSFET
B. Transistor
C. Capacitor
D. BJT
Answer» D. BJT
Discussion
14.

The memory size of DRAM is ____________

A. 1 to 100 MB
B. 512 to 1024 MB
C. 64 to 512 MB
D. 16 to 256 MB
Answer» E.
Discussion
15.

Dynamic RAM is more preferable than static RAM, why?

A. DRAM is of the lowest cost, lowest density
B. DRAM is of the highest cost, reduced size
C. DRAM is of the lowest cost, highest density
D. DRAM is more flexible and lowest storage capacity
Answer» D. DRAM is more flexible and lowest storage capacity
Discussion