WatElectronics.com

You are here: Home / MCQ / Frequency Shift Keying Question & Answers

Frequency Shift Keying Question & Answers

By

This article lists 20 Frequency Shift Keying MCQs for engineering students. All the Frequency Shift Keying Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, or interviews, or professionals who would like to brush up on the fundamentals of Frequency Shift Keying. 

Discrete signals are utilized in transmitting digitized signals and a method involved in such purpose is Frequency Shift Keying. Earlier modems in computers used Frequency shift keying to achieve a baud rate up to 1200, for call signaling FSKs used in second generations of cellular technology.

After the bandwidths required reaches a certain point or rate FSKs considered to be inefficient. The simplest form of FSK is BFSK (Binary Frequency Shift Keying). Binary information i.e., 0 & 1 transmitted in BFSK. 1 in BFSK is referred to as Mark frequency and Space frequency is 0.

FSKS operating with multiple frequencies i.e., discrete is referred to as MFSK (Multiple Frequency Shift Keying). M-ary Orthogonal modulation is used in MFSK for simultaneous transmission of more than two bits.

Despite limited bandwidth in FSK, it can be used in lower bandwidth applications where the highest reliability transportation is a major concern. Higher rates of throughput replaced FSKs by various techniques of Digital modulation are Amplitude-shift Keying, Phase-shift Keying, and Quadrature Amplitude Modulation.

1). Which of these belongs to the category of Digital Modulation?

Hint
2). How many frequencies are involved in FSK signals?

Hint
3). What gets shifted in the signals involved in Frequency Shift Keying?

Hint
4). FSK carrier’s amplitude & phase are ______________?

Hint
5). How many correlators can be used for Coherent detection of FSK?

Hint

Frequency Shift Keying MCQs for Quiz

6). What is tuned in ‘non-coherent detection of FSKs’ at distinct frequencies?

Hint
7). In BFSKs __________ represent high frequency of carrier signals?

Hint
8). How BFSKs bandwidth related to BPSK?

Hint
9). What does an Asynchronous detector of FSK consists?

Hint
10). FSKs reception can be _____________?

Hint

Frequency Shift Keying MCQs for Students

11). What is measured in ‘Non-coherent FSKs reception’?

Hint
12). Continuous FSK have no discontinuities of _____________?

Hint
13). Which of these digitized techniques of modulations can be decoded based on ‘non-coherent detection’?

Hint
14). Telegraphy prefers ____________?

Hint
15). Which of these have Low Probability of Error?

Hint

Frequency Shift Keying MCQs for Interviews

16). FSK signals are robust to _____________?

Hint
17). GSM cellular networks uses ___________?

Hint
18). What are the various advantages of FSK?

Hint
19). Which of these have inefficient bandwidths?

Hint
20). What are the various methods involved in FSKs demodulation?

Hint

For More MCQs