UPRVUNL'21 EE: Daily Practices Quiz 31-July-2021 |_00.1
Engineering Jobs   »   uprvunl je electrical quiz

UPRVUNL’21 EE: Daily Practices Quiz 31-July-2021

Each question carries 1 mark.
Negative marking: 1/4 mark
Total Questions: 06
Time: 08 min.

Q1. In power transformers, it is found that the iron or core losses practically varies very little, this is because
(a) Constant leakage flux
(b) Constant core flux
(c) Constant load current
(d) Constant leakage and core flux

Q2. Which of the conditions is must be fulfilled for a satisfactory parallel operation of transformers?
(a) Correct polarity
(b) Same pu impedance
(c) Same voltage ratio
(d) Leakage impedance should be inversely proportional to the KVA of the transformer

Q3. The qualities aspired to obtain a good permanent magnet is/are
(a) High coercivity
(b) High residual flux
(c) Low coercivity
(d) High residual flux and high coercivity

Q4. The pitch factor, in rotating electrical machinery, is defined as the ratio of resultant EMF of a
(a) Full pitch coil to the phase emf
(b) Chorded coil to that of full pitched coil
(c) Full pitched coil to that of a chorded coil
(d) Chorded coil to the phase emf

Q5. What is the maximum load that can be connected in a circuit containing only lighting points?
(a) 500 watts
(b) 750 watts
(c) 800 watts
(d) 1000 watts

Q6. Why are shunt reactors connected at the receiving end of long transmission line system?
(a) To increase the terminal voltage
(b) To compensate for voltage rise caused by capacitive charging at light load
(c) To improve power factor
(d) None of these

SOLUTIONS
S1. Ans.(b)
Sol. Due to the constant core flux, the iron losses also remain constant.

S2. Ans.(a)
Sol. out of all, polarity must be correct for the connected transformers.

S3. Ans.(d)
Sol. both high residual flux, as well as coercivity, is desired for a good permanent magnet.

S4. Ans.(b)
Sol. K_p= Resultant EMF of a chorded coil/Resultant EMF of a full pitched coil = cos⁡(ε/2)

S5. Ans.(c)
Sol. The maximum load that can be connected in a circuit containing only lighting points is 800 watts.

S6. Ans.(b)
Sol. Shunt Reactor compensation at the receiving end help to reduce the effect of capacitance thus reducing the Ferranti effect.

Sharing is caring!

×

Download success!

Thanks for downloading the guide. For similar guides, free study material, quizzes, videos and job alerts you can download the Adda247 app from play store.

Thank You, Your details have been submitted we will get back to you.

Was this page helpful?

Leave a comment

Your email address will not be published. Required fields are marked *

Join India's largest learning destination

What You Will get ?

  • Job Alerts
  • Daily Quizzes
  • Subject-Wise Quizzes
  • Current Affairs
  • Previous year question papers
  • Doubt Solving session

Login

OR

Forgot Password?

Join India's largest learning destination

What You Will get ?

  • Job Alerts
  • Daily Quizzes
  • Subject-Wise Quizzes
  • Current Affairs
  • Previous year question papers
  • Doubt Solving session

Sign Up

OR
Join India's largest learning destination

What You Will get ?

  • Job Alerts
  • Daily Quizzes
  • Subject-Wise Quizzes
  • Current Affairs
  • Previous year question papers
  • Doubt Solving session

Forgot Password

Enter the email address associated with your account, and we'll email you an OTP to verify it's you.


Join India's largest learning destination

What You Will get ?

  • Job Alerts
  • Daily Quizzes
  • Subject-Wise Quizzes
  • Current Affairs
  • Previous year question papers
  • Doubt Solving session

Enter OTP

Please enter the OTP sent to
/6


Did not recive OTP?

Resend in 60s

Join India's largest learning destination

What You Will get ?

  • Job Alerts
  • Daily Quizzes
  • Subject-Wise Quizzes
  • Current Affairs
  • Previous year question papers
  • Doubt Solving session

Change Password



Join India's largest learning destination

What You Will get ?

  • Job Alerts
  • Daily Quizzes
  • Subject-Wise Quizzes
  • Current Affairs
  • Previous year question papers
  • Doubt Solving session

Almost there

Please enter your phone no. to proceed
+91

Join India's largest learning destination

What You Will get ?

  • Job Alerts
  • Daily Quizzes
  • Subject-Wise Quizzes
  • Current Affairs
  • Previous year question papers
  • Doubt Solving session

Enter OTP

Please enter the OTP sent to Edit Number


Did not recive OTP?

Resend 60

By skipping this step you will not recieve any free content avalaible on adda247, also you will miss onto notification and job alerts

Are you sure you want to skip this step?

By skipping this step you will not recieve any free content avalaible on adda247, also you will miss onto notification and job alerts

Are you sure you want to skip this step?