Q.11 TUF for a half-wave rectifier and centre tapped full wave rectifier is ____________ and ____________, respectively.Ans 1.2.3.4.Correct Ans: 1

Q.16 The torque developed by a motor while running at 1500 rpm is 206 N-m, and the shaft torque available is 200 N-m. The iron and mechanical losses, in watts, are:Ans 1. 500π2. 300π3. 250π4. 150πCorrect Ans: 2

Q.18 Capacity factors of a plant is based on ________.Ans 1. plant reactance2. plant impedance3. plant operating frequency4. plant resistanceCorrect Ans: 3

Q.20 A coil of inductance L henry is connected in parallel with an R Ω resistor. The current flowing through resistance and inductance is IR and IL, respectively. What is the value of the current drawn from the ...

Q.13 B-H curve is also known as ______.Ans 1. Curie point curve2. hysteresis loop3. open circuit characteristics4. magnetisation curveCorrect Ans: 4

Q.22 Two electric lamps have filaments of the same metal having the same thickness. If one of them gives 100 watt and other gives 500 watt across the same supply, then:Ans 1. 100 watt lamp filament has a ...

Q.19 Which of the following is a moving iron instrument’s benefit?Ans 1. It has linear scale.2. It can be used at high frequencies.3. Its current sensitivity is high.4. It can be used under severe over-load conditions.Correct Ans: 4

Q.14 A Francis turbine is used for ________.Ans 1. high to medium heads2. low to low heads3. low to medium heads4. high to high headsCorrect Ans: 3

Q.21 Which of the following best describes a LASER light?Ans 1. Monochromatic and coherent2. Dichromatic and coherent3. Dichromatic and non-coherent4. Monochromatic and non-coherentCorrect Ans: 1

Q.17 Stringing chart represents a graph of ________.Ans 1. sag and tension vs temperature2. tension vs sag3. sag vs conductor size4. sag vs supply frequencyCorrect Ans: 1