Q1:- the direction of rotation of a DC motor is reversed by
1. Riveting armature connections
2. Interchanging the armature and field connections
3. Adding resistance to the field circuit
4. Reversing supply connections
Q3:- a piece of oil soaked paper has been inserted between the plates of a parallel plate capacitor then the potential difference between the two plates will be
1. Increase
2. Decrease
3. Remains unchanged
4. Become zero
ANSWER:-2
ANSWER:-2
1. Riveting armature connections
2. Interchanging the armature and field connections
3. Adding resistance to the field circuit
4. Reversing supply connections
ANSWER:-1
Q2:- the s i unit of conductivity is
1. Ohm metre
2. Ohm per metre
3. Mho meter
4.mho/m
ANSWER:-4
Q3:- a piece of oil soaked paper has been inserted between the plates of a parallel plate capacitor then the potential difference between the two plates will be
1. Increase
2. Decrease
3. Remains unchanged
4. Become zero
ANSWER:-2
Q4:- the current drawn by tungsten filament lamp is measured by an ammeter. the ammeter reading under steady state condition will be the ammeter reading when the supply is switched on
1. Same as
2. Less than
3. Greater than
4. Double
1. Same as
2. Less than
3. Greater than
4. Double
ANSWER:-2
Q5:- Tesla is same as
1. Weber per metre
2. Weber metre square
3. Farad /metre
4. Henry per metre square
1. Weber per metre
2. Weber metre square
3. Farad /metre
4. Henry per metre square
ANSWER:-2
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