Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  Analog and Digital Electronics  >  Test: T Flip Flop - Electrical Engineering (EE) MCQ

Test: T Flip Flop - Electrical Engineering (EE) MCQ


Test Description

15 Questions MCQ Test Analog and Digital Electronics - Test: T Flip Flop

Test: T Flip Flop for Electrical Engineering (EE) 2024 is part of Analog and Digital Electronics preparation. The Test: T Flip Flop questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: T Flip Flop MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: T Flip Flop below.
Solutions of Test: T Flip Flop questions in English are available as part of our Analog and Digital Electronics for Electrical Engineering (EE) & Test: T Flip Flop solutions in Hindi for Analog and Digital Electronics course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: T Flip Flop | 15 questions in 30 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Analog and Digital Electronics for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: T Flip Flop - Question 1

The digital circuit shown in figure works as a

Detailed Solution for Test: T Flip Flop - Question 1

The characteristic equation for various flip flops is shown:

  • SR flip flop

Qn + 1 = S + R’Q

  • J-k flip flop

Qn + 1 = JQ’ + K’Q

  • D flip flop

Qn + 1 = D

  • T flip Flop

Qn + 1 = T exor Q = T’Q +TQ’

Calculation:

Q(t + 1) = Q(t) ⊕ X

& for T F/F

Q(t + 1) = Q(t) ⊕ T

Test: T Flip Flop - Question 2

Three T flip flops are connected to form a counter. The maximum states possible for the counter will be:

Detailed Solution for Test: T Flip Flop - Question 2

Concept:

For a counter with ‘n’ flip flops:

  • The total number of states = 2n (0 to 2n – 1)
  • The largest number that can be stored in the counter = 2n – 1

To construct a counter with any MOD number, the minimum number flip flops required must satisfy:

Modulus ≤ 2n

Where n is the number of flip-flops and is the minimum value satisfying the above condition.

Calculation:

The total number of states required when n = 3:

23  ≥  8

The states will vary from (0 to 7)

So the maximum states possible for the counter will be 8.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: T Flip Flop - Question 3

An JK flip flop can be converted to T flip flop by connecting?

Detailed Solution for Test: T Flip Flop - Question 3

D flip flop:

D flip flop has only one input terminal. The output of the D flip flop will be the same as the input. Hence, it is used in delay circuits.

The circuit is as shown below.

Logic symbol:

Truth table:

Characteristic equation: Qn+1 = D

The D flip flop may be obtained from an S-R flip flop by just putting one inverter between the S and R as shown in the figure below.

S = R̅

The D flip flop may be obtained from a J-K flip flop by just putting one inverter between the J and K as shown in the figure below.

K = J̅

T flip flop:

T flip flop has only one input terminal. The output of the T flip flop will be toggled when the input is high on every new clock pulse. The output will be the same as the previous state when the input is low.

The circuit is as shown below.

Logic symbol:

Truth table:

Characteristic equation: Qn+1 = TQ̅­n + T̅Qn

The T flip flop may be obtained from a J-K flip flop by making both the inputs are the same i.e. J = K.

Test: T Flip Flop - Question 4

The output of the circuit shown will be of frequency______.

Detailed Solution for Test: T Flip Flop - Question 4

Concept:

If we pass the input signal to a single T-flip flop, we will get half of the frequency at the output.

Similarly, when we pass the input signal into an n-bit flip flop counter, the output frequency (fout) will be:

Given Input frequency f = 1 kHz

fout = 125 Hz

Test: T Flip Flop - Question 5

A two-bit counter circuit is shown below

If the state QA QB of the counter at the clock time tn is ‘10’ then the state QA QB of the counter at tn + 3 (after three clock cycles) will be

Detailed Solution for Test: T Flip Flop - Question 5

T Flip Flop MCQ Question 9 Detailed Solution

From the above table we observe that before the start of the next clock pulse, the inputs are:

J = 1, K = 0, T = 1

The output after the first clock pulse will be:

QA QB = 11

The inputs are now:

J = 0, K = 1, T = 1

The output after the second clock pulse will be:

QA QB = 00

The inputs are now:

J = 1, K = 0, T = 0

The output after the third clock pulse will be:

QA QB = 10

Test: T Flip Flop - Question 6

The clock frequency applied to the digital circuit shown in the figure below is 1KHz. If the initial state of the output of the flip-flop is 0, the frequency of the output waveform Q in KHz is

Detailed Solution for Test: T Flip Flop - Question 6

The given circuit is in toggle mode, so frequency will get half.

Output frequency = 0.5 kHz

Test: T Flip Flop - Question 7

If the input to T-flipflop is 200 Hz signal, the final output of the three T- flipflops in cascade is

Detailed Solution for Test: T Flip Flop - Question 7

If we pass the input signal to a single T-flip flop, we will get half of the frequency at the output.

Similarly, when we pass the input signal into an n-bit flip flop counter, the output frequency (fout) will be:

Given Input frequency f = 200 Hz

fout = 25 Hz

Test: T Flip Flop - Question 8

Determine the output frequency of the given circuit if the input CLK frequency is 1 MHz.

Detailed Solution for Test: T Flip Flop - Question 8

Concept:

T flip-flop

The truth table of the T flip-flop is given by:

The characteristic table of the T flip-flop is:

The characteristic equation of the T flip-flop is:

Q(t + 1) = T ⊕ Q(t)

Analysis:

From the given circuit two flip-flops are present and the Q1’ output is connected to the input of the second flip-flop.

T2 = Q1

Given circuit is an example of the Down counter.

The below figure represents the waveforms for the respective clock edges.

The flip-flop2 will trigger only when the Q1’ is going from 0 to 1, i.e., positive triggering of the Q1’.

In the output is Q1 the total time period is 4 times that of the clock (4T).

Conclusion:

As the time period is 4 times then the frequency will be divided by four times.

fout = 0.25 MHz = 250 kHz

Test: T Flip Flop - Question 9

In J-K flip-flop, the function K=J is used to realize _____________

Detailed Solution for Test: T Flip Flop - Question 9

T flip-flop allows the same inputs. So, in J-K flip-flop J=K then it will work as T flip-flop.

Test: T Flip Flop - Question 10

The only difference between a combinational circuit and a flip-flop is that _____________

Detailed Solution for Test: T Flip Flop - Question 10

Both flip-flop and latches are memory elements with clock/control inputs. They depend on the past as well as present states. Whereas, in case of combinational circuits, they only depend on the present state.

Test: T Flip Flop - Question 11

Both the J-K & the T flip-flop are derived from the basic _____________

Detailed Solution for Test: T Flip Flop - Question 11

The SR latch is the basic block for the D latch/flip flop from which the JK and T flip flops are derived. A latch is similar to a flip-flop, only without a clock input.

Test: T Flip Flop - Question 12

___________ only allows for one master and one slave and is limited to distances of up to 15 meters.

Detailed Solution for Test: T Flip Flop - Question 12

RS-232 only allows for one master and one slave and is limited to distances of up to 15 meters.

Key Points 
RS-232, RS-422, and RS-485 
are standards for serial communications that define the pinouts, cabling, signal levels, transmission baud rates, and parity checking.

  • RS-232 only allows for one master and one slave and is limited to distances of up to 15 meters.
  • RS-422 can address up to 10 slaves using four wires (full duplex) and has a distance capacity of 4000 feet.
  • RS-485 can address up to 32 slaves using either a two-wire (half duplex) or a four-wire system (full duplex) and has a distance capacity of 4000 meter
Test: T Flip Flop - Question 13

Whose operations are more faster among the following?

Detailed Solution for Test: T Flip Flop - Question 13

Combinational circuits are often faster than sequential circuits. Since the combinational circuits do not require memory elements whereas the sequential circuits need memory devices to perform their operations in sequence. Latches and Flip-flops come under sequential circuits.

Test: T Flip Flop - Question 14

What is a trigger pulse?

Detailed Solution for Test: T Flip Flop - Question 14

Trigger pulse is defined as a pulse that starts a cycle of operation.

Test: T Flip Flop - Question 15

In Digital Circuits, which of the following options represent the synchronous control inputs in a T flip flop?

Detailed Solution for Test: T Flip Flop - Question 15

The input at which the flip flop changes its state when synchronized with the clock is called the synchronous control inputs. For T flip flop T is the synchronous control input.

137 videos|143 docs|71 tests
Information about Test: T Flip Flop Page
In this test you can find the Exam questions for Test: T Flip Flop solved & explained in the simplest way possible. Besides giving Questions and answers for Test: T Flip Flop, EduRev gives you an ample number of Online tests for practice

Top Courses for Electrical Engineering (EE)

137 videos|143 docs|71 tests
Download as PDF

Top Courses for Electrical Engineering (EE)