Kerala PSC Previous Years Question Paper & Answer

Title : Maintenance Engineer (Electronics)
Question Code :

Page:9


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name ' Maintenance Engineer (Electronics)' And exam conducted in the year 2023. And Question paper code was '083/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.

page: 9 out of 21
Excerpt of Question Code: 083/2023/OL

B:-5 MHz

C:-3.34 MHz

D:-1.67 MHz

Correct Answer:- Option-D

Question40:-A JK flip-flop with J = 1, K = 1 has a clock signal with frequency of 10
KHz. The Q output is

A:-Always 1

B:-Always 0

C:-5 KHz square wave
D:-10 KHz square wave
Correct Answer:- Option-C

Question41:-A 4 bit asynchronous binary counter with negative edge triggered D
flip-flops with propagation delay of 10 ns. What is the highest frequency allowed for

the counter to operate reliably, avoiding timing issues caused by propagation delay
?

A:-40 MHz
B:-80 MHz
C:-25 MHz
D:-50 MHz
Correct Answer:- Option-C

Question42:-A 12 bit Analog to Digital Converter (ADC) is used with a voltage range
0 to 5 volt. What is the possible value for voltage resolution ?

A:-2.44 milli volts
B:-0.416 micro volts
C:-1.22 milli volts

D:-2.4 micro volts

Correct Answer:- Option-C

Question43:-Maximum possible signal to Noise Ratio of an 8 bit ADC considering
the effect of quantisation noise is

A:-49.8 dB
B:-256 dB
C:-128 dB
D:-64 dB
Correct Answer:- Option-A
Question44:-The conversion time of n bit flash type ADC with clock period T is
A:-nT
B:-(n-1)T
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