Electrical Engineering · Question Bank

Fundamentals of Electricity

47 of 141 questions match · page 3 of 3. Answer in your head first, then check the solution.

Study the lessons

#41📜 EE Pre-Board March 2018📘 PowerhouseEasy

One kilowatt is equal to ____ metric horsepower.

A1.26

B1.36

C1.46

D1.56

#42📜 EE Pre-Board March 2018📘 PowerhouseEasy

The output of a motor in watts when it takes a power of 3 kW and its efficiency is 75% is

A2000

B2250

C2500

D2750

#43📜 EE Pre-Board March 2018📘 PowerhouseEasy

A heater wire of length 50 cm and 1 mm² in cross-section carries a current of 2 A when connected across a 2 V battery. What is the resistivity of the wire?

A\(2 \times 10^{-6}\) Ω·m

B\(2 \times 10^{-8}\) Ω·m

C\(4 \times 10^{-6}\) Ω·m

D\(4 \times 10^{-8}\) Ω·m

#44📜 EE Pre-Board August 2018📘 PowerhouseEasy

Find the frequency of a radio wave whose wavelength is 600m.

A500Hz

B500kHz

C150Hz

D150kHz

#45📜 EE Pre-Board August 2018📘 PowerhouseEasy

An aluminum cable has 10 identical strands, a length of 1,500m and a diameter of 2.50 mm each. What is the resistance of the cable?

A86.3 Ω

B0.863 Ω

C56.3 Ω

D0.563 Ω

#46📜 EE Pre-Board August 2018📘 PowerhouseEasy

Wavelength is the distance travelled by an electromagnetic wave during the time of one cycle. Given a wavelength of 12 meters, what is the frequency?

A250 kHz

B25 kHz

C250 MHz

D25 MHz

#47📜 EE Pre-Board August 2018📘 PowerhouseEasy

If a certain conductor has an area of 336,400 circular mils, what is the radius of this conductor in cm?

A0.0663

B0.81

C0.737

D0.921

More Electrical Engineering topics