HEC USAT-E (Pre-Engineering) Physics: Past Papers MCQs with Answers

HEC USAT-E (Pre-Engineering) Physics Past Papers sample MCQs

1. Q1. In an AC circuit, the voltage is given by V = 200 sin(100πt) and the current is given by I = 10 sin(100πt + π/3). What is the power factor?

   • A) 0.5
   • B) 0.866
   • C) 1
   • D) 0

   Answer: 0.5

2. Q2. A coil is rotated in a magnetic field. The emf induced is maximum when the coil is

   • A) parallel to the field
   • B) perpendicular to the field
   • C) at 45° to the field
   • D) at 60° to the field

   Answer: parallel to the field

3. Q3. A 10 V battery is connected to a 5 ohm resistor. The current is

   • A) 1 A
   • B) 2 A
   • C) 0.5 A
   • D) 5 A

   Answer: 2 A

4. Q4. The unit of electric flux is

   • A) N m² / C
   • B) N / C
   • C) V m
   • D) V / m

   Answer: N m² / C

5. Q5. Absolute error in the above measurements?

   • A) 0.005
   • B) 0.01
   • C) 0.02
   • D) 0.03

   Answer: 0.01

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