| Skip Navigation LinksHome > Question view

Question Answer

► MCQ Exam ON : Power Systems

A 120 ohm resistor is in parallel with a capacitor with a capacitive reactance of 40 ohm . Both components are across a 12 V ac source. What is the magnitude of the total impedance?

1)		3.7 ohm
2)		37.9 ohm
3)		4,800 ohm
4)		14,400 ohm
5)		NULL

Complaint Here As Incorrect Question / Answer

Important MCQ on Related Subject

📌	When happen parallel resonance in ac parallel circuit, power factor is...

📌	The equal area criteria of stability is used for:

📌	If a generator of 250MVA rating has an inertia constant of 6MJ/MVA, its inertia constant on a 100MVA base is:

📌	What is the angular difference between j4 and –j4?

📌	If the torque angle of the alternator increases indefinitely the system will show:

📌	A capacitor with 150 ohm of capacitive reactance is across an ac source. The impedance, expressed in polar form, is

📌	The transient stability limit of the power system can be increased by introducing:

📌	In a series RC circuit, when the frequency and the resistance are halved, the impedance

📌	For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is

📌	The steady state stability of the power system can be improved by:

📌	If the maximum value of a current of a circuit is 1 Amp (sinusoidal wave), what is the R.M.S value....

📌	The Critical Clearance time of a fault in the power system is related to

📌	The use of high speed breakers can

📌	As sine wave has a frequency of 50Hz. Its angular frequency is .........rad/sec.

📌	A 47 ohm resistor and a capacitor with 150 ohm of capaciti ve reactance are in series across an ac source. The impedance, expressed in rectangular form, is

📌	The Critical Clearance time of a fault in the power system is related to

📌	The complex number 40< 55° is equivalent to

📌	The equal area criteria of stability is used for:

📌	An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:

📌	The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency

📌	A 2 k ohm resistor and a 0.002 F capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is

📌	The power factor of an an R-C circuit is------

📌	An RC-circuit has been charged with 5:0V battery, and then discharged. It took 15:0 ms to bedischarged from 4:8V to 2:4V. How long it would take if the same RC-circuit is charged with 10:0Vbattery and then discharged from 4.8V to 2.4V?

📌	A 12 k ohm resistor is in series with a 0.02 F capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3<0° mA, what is the source voltage expressed in polar form?

📌	When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

📌	A 2 k ohm resistor is in series with a 0.015 F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?

📌	A 47 ohm resistor and a capacitor with a capacitive reactance of 120 ohm are in series across an ac source. What is the circuit impedance, Z?

📌	A 120 ohm resistor is in parallel with a capacitor with a capacitive reactance of 40 ohm . Both components are across a 12 V ac source. What is the magnitude of the total impedance?

📌	A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 k ohm. Current flow in the circuit is

📌	The inertia constant of the two machines which are not swinging together are M1 and M2. The equivalent inertia constant of the system is

Online GK

General Knowledge Multiple choice GK Questions MCQ on current affairs quiz

Get General Knowledge Multiple choice GK Questions MCQ on current affairs quiz, All GK based Exams mcq quiz and also examine your ability for SSC, Banking, IAS, UPSC, CLAT, IBPS Competitive Examinations, online general knowledge preparation, College Level Quiz, Medical, Engineering, MBA BBA

Online GK Give Online General Knowledge Test for All Exam GK. Each of the below online tests consists of ten multiple choice objective type questions with answers. In the tests, simply select one of the answer choices. Your answer will be marked immediately by indicating or . Also, the correct answer will be highlighted in green colour.

mcq quiz multiple choice questions test for gk based exams, educational questions with answer MCQ GK explaination. Here Get Study of All GK for Competition Exam. We provide fully solved Online General Knowledge Quiz preparation. you can learn and practice Online free. solve General Knowledge Multiple choice GK Quiz online, Study and Tips general knowledge mcq. General Knowledge Multiple choice GK Questions MCQ on current affairs quiz.

Managed Services By: www.upscgk.com