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स्पेशल क्लास रेलवे अपरेंटिस
An examination for selection of candidates for appointment as Special Class Apprentices in Mechanical Department of Indian Railways will be held by the Union Public Service Commission.

Thursday, 7 July 2011

Unit dimension-Questions

1.            Which of the following is not equal to watt
[SCRA 1991; CPMT 1990]
(a)   Joule/second                   (b)   Ampere * volt
(c)    (Ampere)2 *ohm              (d)   Ampere/volt
 Ans-       (d)   Watt=Joule/second = Ampere×volt = Ampere2×Ohm

2.          The unit of self inductance of a coil is
[MP PMT 1983, 92; SCRA 1986; CBSE PMT 1993;
CPMT 1984, 85, 87]
(a)   Farad                                 (b)   Henry
(c)    Weber                               (d)   Tesla 
Ans-(a)  henry 
3. In which of the following systems of unit, weber is the unit of magnetic flux  
                                [SCRA 1991; CBSE PMT 1993; DPMT 2005]
(a)   CGS                                   (b)   MKS
(c)   SI                                        (d)   None of these
 ANS- (c)


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