1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
In a meter bridge experiment null point is obtained at $$20$$ $$cm$$, from one end of the wire when resistance $$X$$ is balanced against another resistance $$Y.$$ If $$X < Y$$, then where will be the new position of the null point from the same end, if one decides to balance a resistance of $$4$$ $$X$$ against $$Y$$
A
$$40$$ $$cm$$
B
$$80$$ $$cm$$
C
$$50$$ $$cm$$
D
$$70$$ $$cm$$
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Thermistors are usually made of
A
metal oxides with high temperature coefficient of resistivity
B
metals with high temperature coefficient of resistivity
C
metals with low temperature coefficient of resistivity
D
semiconducting materials having low temperature
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The electrochemical equivalent of a metal is $${3.35109^{ - 7}}$$ $$kg$$ per Coulomb. The mass of the metal liberated at the cathode when a $$3A$$ current is passed for $$2$$ seconds will be
A
$$6.6 \times {10^{57}}/kg$$
B
$$9.9 \times {10^{ - 7}}\,kg$$
C
$$19.8 \times {10^{ - 7}}\,kg$$
D
$$1.1 \times {10^{ - 7}}\,kg$$
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The thermo $$emf$$ of a thermocouple varies with temperature $$\theta $$ of the hot junction as $$E = a\theta + b{\theta ^2}$$ in volts where the ratio $$a/b$$ is $${700^ \circ }C.$$ If the cold junction is kept at $${0^ \circ }C,$$ then the neutral temperature is
A
$${1400^ \circ }C$$
B
$${350^ \circ }C$$
C
$${700^ \circ }C$$
D
No neutral temperature is possible for this termocouple.
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12