Electrical Engineering MCQs

Page No. 219

At very low frequencies a series R-C circuit behaves as almost purely___________?


aresistive

✖


binductive

✖


ccapacitive

✓


dnone of the above

✖


View Answer capacitive

The frequency of domestic power supply in Pakistan is_________?


a200 Hz

✖


b100 Hz

✖


c60 Hz

✖


d 50 Hz

✓


View Answer 50 Hz

In a three-phase supply floating neutral is undesirable because it way give rise to___________?


ahigh voltage across the load

✖


b low voltage across the load

✖


cunequal line voltages across the load

✓


dminimun voltage across the load

✖



The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be___________?


a282.8 V

✓


b141.4 V

✖


c111 V

✖


d100 V

✖


View Answer 282.8 V

Which of the following waves has the highest value of peak factor ___________?


aSquare wave

✖


bSine wave

✖


cHalf wave rectified sine wave

✓


dTriangular wave

✖



The inductance of a coil can be increased by_________?


a increasing core length

✖


b decreasing the number of turns

✖


cdecreasing the diameter of the former

✖


dchoosing core material having high relative permeability

✓



The phosphors for which of the following pair are 180° out of phase for VL, VC and VR______?


aVc and VR

✖


b VL and VR

✖


c Vc and VL

✓


dnone of the above

✖


View Answer Vc and VL

The r.m.s. value of pure cosine function is_________?


a0.5 of peak value

✖


b 0.707 of peak value

✓


csame as peak value

✖


dzero

✖



The series and parallel resonance on L-C circuit’ differs in that_________?


aseries resistance needs a low-resistance source for sharp rise in current

✓


bseries resonance needs a high-resistance source for sharp increase in current

✖


cparallel resonance needs a low-resistance source for a sharp in¬crease in impedance

✖


dparallel resonance needs a low-resistance source for a sharp rise in line current

✖



The frequency of an alternating current is____________?


athe speed with which the alternator runs

✖


b the number of cycles generated in one minute

✖


c the number of waves passing through a point in one second

✓


dthe number of electrons passing through a point in one second

✖



Goto Page No.

Page 219 of 366

Alphabetical MCQs Categories
—

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"
—

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan