Related Questions

Ionisation potential applied across the electrodes of electrostatic tar precipitator is around
A 230 V AC
B 60 KV AC
C 230 V DC
D 60 KV DC
At series resonance, voltage across L is ___________ voltage across C
A Equal to but opposite in phase to
B Equal to but in phase with
C Greater than but in phase with
D Less than but in phase with
A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current
A Increases
B Remains constant
C Decreases
D Ceases
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
A Is increased
B Is decreased
C Does not change
D Momentarily goes to zero
For given applied voltage, with the increase in frequency of the applied voltage
A eddy current loss will decrease
B eddy current loss will increase
C eddy current loss will remain unchanged
D none of the above
The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is
A 4.0
B 2.0
C 1.0
D 0.5
q পরিমাণ আধান একটি চৌম্বক ক্ষেত্র B→ এর সাথে সমান্তরালে V→ বেগে গতিশীল। উক্ত স্থানে একটি তড়িৎক্ষেত্র E→ থাকলে আধানের উপর ক্রিয়াশীল বল কত হবে? (A charge q moving with velocity V→ along the direction of a magnetic field B→ . If there is an electric field E→ in the same place then what will be the effective force on the charge q?)
A q(B→+V→×E→)
B q(B→+V→.E→)
C qE→
D q(E→+B→)
q পরিমাণ আধান একটি চৌম্বক ক্ষেত্র i এর সাথে সমান্তরালে বেগে গতিশীল। উক্ত স্থানে একটি তড়িৎক্ষেত্র থাকলে আধানের উপর ক্রিয়াশীল বল কত হবে? ( A charge moving with velocity along the direction of a magnetic field B. If there is an electric field E in the same place then what will be the effective force on the charge q?)
A qE→+v→×B→
B qE→+v→·B→
C qE→
D qE→+B→
The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:
A One-half the primary current
B Same as the primary current
C Twice the primary current
D No more than 10% less than the primary current
E None of the above
When the voltage across a capacitor is tripled, the stored charge
A Triples
B Is cut to one-third
C Stays the same
D Doubles

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