Junior Engg. Questions

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Q1:- The main advantage of temporary magnets is that we can 

1. intersect at infinity
2. intersect within the magnet 
3. cannot intersect at all
4. cancel at pole faces 

ANSWER:- 1

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Q2:- The magnetic material used in permanent magnets is 

1. ion 
2. soft steel
3. nickel
4. hardened steel

ANSWER:-4

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Q3:- In an R-L series circuit the phase difference between applied voltage and circuit current will increase if 

1. inductance is increased 
2. R is increased
3. inductance is decreased 
4. supply frequency is decreased 

ANSWER:-1

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Q4:- The reactance of 1 farad capacitance when connected to a dc circuit is 

1. infinite
2. 1 ohm 
3. 0.5 ohm 
4. zero ohms 

ANSWER:-1

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Q5:- In electrodynamometer ammeter the deflection of the pointer is proportional to 

1. mean of currents in fixed coil a moving coil 
2. square of the current in moving coil 
3. RMS value of the currents in fixed coil 
4. mean square of currents in fixed coil and moving coil

ANSWER:-4

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