Sail E0 Webinar

MCQs

Total Questions : 374 | Page 4 of 38 pages
Question 31. A permanent magnet moving coil ammeter has a coil resistance of 99ohm and Full Scale DeflectionFSD. current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is
  1.    0.007mA
  2.    0.05mA
  3.    0.023mA
  4.    0.1mA
 Discuss Question
Answer: Option B. -> 0.05mA
Question 32. Some wire- wound resistors have bifilar winding. This type of winding is used to
  1.    Increase the thermal stability
  2.    Reduce the tolerance
  3.    Reduce the inductance of winding
  4.    Double the power rating of the resistor
 Discuss Question
Answer: Option C. -> Reduce the inductance of winding
Question 33. The chemical effect of current is used in
  1.    D.C. ammeter hour meter
  2.    D.C. ammeter
  3.    D.C. energy meter
  4.    None of the above
 Discuss Question
Answer: Option A. -> D.C. ammeter hour meter
Question 34. The pressure coil of a wattmeter should be connected on the supply side of the current coil when
  1.    Load impedance is high
  2.    Load impedance is low
  3.    Supply voltage is low
  4.    None of the above
 Discuss Question
Answer: Option A. -> Load impedance is high
Question 35. A resistor of 10kΩhms with 5% tolerance is connected in parallel with a 5kΩhms resistor of 10% tolerance. What is the tolerance limit for the parallel network?
  1.    5%
  2.    6.67%
  3.    10%
  4.    8.33%
 Discuss Question
Answer: Option D. -> 8.33%
Question 36. It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?
  1.    100W
  2.    150W
  3.    50W
  4.    200W
 Discuss Question
Answer: Option B. -> 150W
Question 37. The EMF of Weston standard cell is measured using
  1.    Moving- iron meter
  2.    Moving-coil meter
  3.    Digital Volt meter
  4.    Potentiometer
 Discuss Question
Answer: Option D. -> Potentiometer
Question 38. Wagner earthing device is used to eliminate errors due to
  1.    Electrostatic coupling
  2.    Electromagnetic coupling
  3.    Both A and B
  4.    None of the above
 Discuss Question
Answer: Option A. -> Electrostatic coupling
Question 39. A mulliammeter can be used as
  1.    Voltmeter and ammeter
  2.    Wattmeter
  3.    Ohmmeter
  4.    Frequency meter
 Discuss Question
Answer: Option A. -> Voltmeter and ammeter
Question 40. The multiplier and the meter coil in a voltmeter are in
  1.    Series
  2.    Parallel
  3.    Series-parallel
  4.    None of the above
 Discuss Question
Answer: Option A. -> Series

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0