Electrical Engineering Answers

Measure the transient response of RL circuit where amplitude is 30V, Number of cycle is 5, on time is 20ms, R= 8Q, L=4mHC= 1μF

Design a circuit find the sum of 2 input voltages V1 and V2 op-amp may be used in inverting mode

In 3 phase system, the power was measured by using two wattmeter's method the first wattmeter's reading was 1600 Watt and the second wattmeter's reading was - 100 Watt the total power of the system is:

Select one:

A. 1600 Watt

B. 1500 Watt

C. 1700 Watt

For an iron - core transformer with Ep =200 V; Es =2400 V; and the primary coil consists of 50 turns. Find the secondary coils turns:

Select one:

A. 600 turns

B. None of these

C. 10 turns

D. 300 turns

In a balanced 3 phase negative sequence(ACB) system if the line current la A=10 L- 45 ° A.

The current in phase C equal to:

Select one:

A. 10 L100 °A

B.10 L75 °A

C. None of these

D. 10 L-165 °A

(a) A silicon pn junction at T = 300 K has a reverse-saturation current of

IS = 2 × 10−14 A. Determine the required forward-bias voltage to produce a

current of (i) ID = 50 μA and (ii) ID = 1 mA. (b) Repeat part (a) for

IS = 2 × 10−12 A

(a) what do you understand by RS232 interface,RS232 connecter and RS232 cable?explain in detail with emphases their usage/application? (b) write an illustrate note on following (1) RS422, (2) RS423, (3) RS485

(a) what do you understand by impedence analyzer? write detail note on its working,functionality,applications and specification of network analyzer? (b) what do you understand by logic analyzer? write detail note on its working,functionality,applications and specification of network analyzer?

what do you understand by network analyzer? write detail note on its working,functionality,applications and specification of network analyzer? (b) what is pNA network analyzer? draw and explain block doagram of network analyzer system? enumerate the difference between network analyzer and spectrum analyzer?what si best network analyzer?

(a) what do you understand by programming logic controller?how do PLC work? illustrate with example. highlights various types,physical structure and applications? (b) draw and explain typical block diagram of PLC?