Correct Answer : D
Explanation :
Explanation :
<span>6</span>
Correct Answered :
Wrong Answered :
A
4
B
3
C
9
D
6
<span>6</span>
Correct Answered :
Wrong Answered :
A
Zero
B
The current passing through it
C
twice the normal value as it depends on Hibbert`s magnetic standard
D
None of the above
<span>Zero</span>
Correct Answered :
Wrong Answered :
List-I (Instrument) List-II (Error)
(w) PMMC voltmeter (i) Eddy current error
(x) AC ammeter ii) Phase angle error
(y) Current transformer iii) Braking system error
(z) Enérgy męter iv) Temperature error
Choose the correct option
A
(w)- (iv), (x)-(iii), (y)-(ii), (z)-(i)
B
(W)- (iv), (x)-(i), (y)-(ii), (z)-(iii)
C
(w)-(iv), (x)-(iii), (y)-(i), (z)-(ii)
D
(w)- (ii), (x)-(iv), (y)-(i) (z)-(iii)
<li data-start="135" data-end="280"><p data-start="137" data-end="280"><strong data-start="137" data-end="159">(w) PMMC voltmeter</strong> → sensitive to <strong data-start="175" data-end="201">temperature variations</strong> because the copper coil resistance changes.<br data-start="245" data-end="248"> ✅ <strong data-start="252" data-end="278">(iv) Temperature error</strong></p> </li> <li data-start="282" data-end="467"> <p data-start="284" data-end="467"><strong data-start="284" data-end="335">(x) AC ammeter (moving iron / dynamometer type)</strong> → has errors due to inductance of the coil, which causes a phase shift between current and flux.<br data-start="432" data-end="435"> ✅ <strong data-start="439" data-end="465">(ii) Phase angle error</strong></p> </li> <li data-start="469" data-end="729"> <p data-start="471" data-end="729"><strong data-start="471" data-end="503">(y) Current transformer (CT)</strong> → introduces <strong data-start="517" data-end="538">phase angle error</strong> and <strong data-start="543" data-end="558">ratio error</strong>, but the most standard classification here is <strong data-start="605" data-end="626">phase angle error</strong>.<br data-start="627" data-end="630"> ✅ <strong data-start="634" data-end="660">(ii) Phase angle error</strong> (✔️ check if duplication allowed — usually CT = phase angle error)</p> </li> <li data-start="731" data-end="863"> <p data-start="733" data-end="863"><strong data-start="733" data-end="753">(z) Energy meter</strong> → uses an eddy-current-based braking system; errors arise due to this.<br data-start="824" data-end="827"> ✅ <strong data-start="831" data-end="861">(iii) Braking system error</strong></p></li>
Correct Answered :
Wrong Answered :