ESE 2021 EE Technical Quiz -20 for ESE & GATE EE Exams

Question 1

The condition for toggle mode in JK flip flop is

Question 2

Consider the following statements about Polar Plots,

1) When a pole is added at origin in the transfer function, it rotates the plot by -90° at zero and infinite frequencies.

2) When a non-zero pole is added to the transfer function, it rotates the curve by –90° at zero frequency.

Which of the above statement is/are correct?

Question 3

A circuit consists of a constant current source, R, L and C all are connected in series, then the voltage across capacitor is:

Question 4

If the turn ON time of SCR is 10 μsec then which of the following gate pulse will be able to turn ON the SCR when forward biased?

Question 5

If fault current in the relay coil is 10 times more then pick up current, then plug setting multiplier is

Question 6

Harmonies in a system results in

i. Increased losses on the distribution system

ii. Improvement of the supply voltage

iii. Disturbances in the communication networks

iv. Overloads & premature ageing of power factor correction capacitors

Question 7

In the given circuit, determine the current I_C2. Here, Q₁ and Q₂ are identical.

Question 8

For a network graph having its fundamental loop matrix B_f and B_l corresponding to twigs and links, which of the following statements are correct?

1) B_l is always an identity matrix.

2) B_t is an identity matrix.

3) B_f has a rank of b – (n – 1), where b is the number of branches and n is the number of nodes of the graph.

Question 9

Consider the following statements:

A. Both statement (i) and statement (ii) are true, and statement (ii) is the correct explanation of statement (i)

B. Both statement (i) and statement (ii) are true, but statement (ii) is not the correct explanation of statement (i)

C. Statement (i) is true, but statement (ii) is false

D. Statement (i) is false, but statement (ii) is true

Statement (i): Star-star transformer connections are rarely used.

Statement (ii): In star-star transformer difficulties associated with the exciting current.

Question 10

Consider the following statements:

A. Both statement (i) and statement (ii) are true, and statement (ii) is the correct explanation of statement (i)

B. Both statement (i) and statement (ii) are true, but statement (ii) is not the correct explanation of statement (i)

C. Statement (i) is true, but statement (ii) is false

D. Statement (i) is false, but statement (ii) is true

Statement (i): Transfer function of a linear time invariant system is the ratio of Laplace transform of output variable to input variable considering all initial conditions.

Statement (ii): The highest power of the complex variable in the denominator of the transfer function determines the order of the system.