engineering recuitment JKSSB JE Mock Test 2025 Electrical Machines DC Motor

​Which is the wrong statement for DC Fan? 

1
DC motor fans use 70% less energy than a standard AC fan 
2
DC motor fans are less noisy. 
3
DC motor fans have more rouged construction than an AC motor fan. 
4
DC motor fans have more speed options than an AC motor fan. 
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