Q1:- When forward biased, a PN junction diode
Q2:- When a 50 Hz ac supply is given to an electromagnet the polarity of the electromagnet
Q3:- If a transformer have primary winding and secondary winding have no of turns respectively 1000 and 400 . if primary voltage is 250 voltage then secondary voltage will be
Q4:- Moving iron type instruments are used for measurement of
Q5:- In both squirrel cage and slip ring induction motors number of poles on stator is
- blocks the current completely
- drops a large voltage
- offers very high resistance to the current
- allows the current to flow through it
Q2:- When a 50 Hz ac supply is given to an electromagnet the polarity of the electromagnet
- remains unchanged
- change every 50 cycles of the supply voltage
- changes every half cycle of the supply voltage
- change every one cycle of the supply voltage
Q3:- If a transformer have primary winding and secondary winding have no of turns respectively 1000 and 400 . if primary voltage is 250 voltage then secondary voltage will be
- 100 volt
- 1600 volt
- 400 volt
- 625 volt
Q4:- Moving iron type instruments are used for measurement of
- earth resistance
- only alternating currents and voltage
- only direct currents and voltages
- both alternating current and direct currents and voltages
Q5:- In both squirrel cage and slip ring induction motors number of poles on stator is
- more than that of rotor
- independent of rotor
- same as that of rotor
- less than that of rotor
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